7400-series integrated circuits

{{See also|Transistor–transistor logic#History}}

The 7400 series contains hundreds of devices that provide everything from basic logic gates, flip-flops, and counters, to special purpose bus transceivers and arithmetic logic units (ALU). Specific functions are described in a list of 7400 series integrated circuits. Some TTL parts were made with an extended military-specification temperature range. These parts are prefixed with 54 instead of 74 in the part number. The less-common 64 and 84 prefixes on Texas Instruments parts indicated an industrial temperature range. Since the 1970s, new product families have been released to replace the original 7400 series. More recent TTL-compatible logic families were manufactured using CMOS or BiCMOS technology rather than TTL.

class="wikitable" |+ Texas Instruments prefixes for TTL temperature ranges
Prefix	Name	Temperature range	Remarks
54	Military	−55 °C to +125 °C
64	Industrial	−40 °C to +85 °C	rare
74	Commercial	0 °C to +70 °C	most common

Today, surface-mounted CMOS versions of the 7400 series are used in various applications in electronics and for glue logic in computers and industrial electronics. The original through-hole devices in dual in-line packages (DIP/DIL) were the mainstay of the industry for many decades. They are useful for rapid breadboard-prototyping and for education and remain available from most manufacturers. The fastest types and very low voltage versions are typically surface-mount only, however.{{Citation needed|date=April 2018|reason=Need citation for surface mount being faster and/or lower voltage}}

File:KL TI SN5451 Logic IC (cropped).jpg

The first part number in the series, the 7400, is a 14-pin IC containing four two-input NAND gates. Each gate uses two input pins and one output pin, with the remaining two pins being power (+5 V) and ground. This part was made in various through-hole and surface-mount packages, including flat pack and plastic/ceramic dual in-line. Additional characters in a part number identify the package and other variations.

Unlike the older resistor-transistor logic integrated circuits, bipolar TTL gates were unsuitable to be used as analog devices, providing low gain, poor stability, and low input impedance.Don Lancaster, TTL Cookbook, Howard W. Sams 1974, page 169 Special-purpose TTL devices were used to provide interface functions such as Schmitt triggers or monostable multivibrator timing circuits. Inverting gates could be cascaded as a ring oscillator, useful for purposes where high stability was not required.

Although the 7400 series was the first de facto industry standard TTL logic family (i.e. second-sourced by several semiconductor companies), there were earlier TTL logic families such as:

• Sylvania Universal High-level Logic in 1963{{Cite web|url=http://www.computerhistory.org/atchm/the-rise-of-ttl-how-fairchild-won-a-battle-but-lost-the-war/|title=The Rise of TTL: How Fairchild Won a Battle But Lost the War {{!}} Computer History Museum|website=computerhistory.org|date=13 July 2015 |at=See section: "The Rise of TTL"|language=en-US|access-date=2018-06-17}}{{Cite book|url=https://archive.org/details/bitsavers_sylvaniadaiaUniversalHighLevelLogicMay66_3459527|title=SM2927 Sylvania Universal High Level Logic May66|date=1966}}{{Cite news|url=http://www.electronicdesign.com/boards/digital-ics-standard-logic|title=Digital ICs: Standard Logic|date=2002-01-07|work=Electronic Design|access-date=2018-06-17|archive-date=2018-06-17|archive-url=https://web.archive.org/web/20180617165558/http://www.electronicdesign.com/boards/digital-ics-standard-logic|url-status=dead}}
• Motorola MC4000 MTTL{{Cite book|url=http://bitsavers.trailing-edge.com/components/motorola/_dataBooks/1971_Motorola_TTL_Integrated_Circuits_Data_Book.pdf|title=TTL Integrated Circuits Data Book|publisher=Motoroloa Semiconductor Products Inc.|year=1971}}{{Cite book|url=https://books.google.com/books?id=nv9SAAAAMAAJ&q=mc4000|title=TTL Cookbook|last=Lancaster|first=Don|date=1974|publisher=H. W. Sams|isbn=9780672210358|pages=8|language=en}}{{Cite book|url=https://archive.org/details/ttlcookbook00lanc/page/9|title=TTL Cookbook|last=Lancaster|first=Don|publisher=Sams / Prentice Hall Computer Publishing|year=1974|isbn=0-672-21035-5|pages=[https://archive.org/details/ttlcookbook00lanc/page/9 9]|url-access=registration}}
• National Semiconductor DM8000{{Cite web|url=http://www.andysarcade.net/store2/dm8000-series-ttl.html|title=DM8000 series TTL – andys-arcade|website=andysarcade.net|language=en-GB|access-date=2018-06-17}}{{Better source needed|reason=This source may not be WP:RS|date=June 2018}}
• Fairchild 9300 series{{Cite web|url=http://www.computerhistory.org/siliconengine/standard-logic-ic-families-introduced/|title=1963: Standard Logic IC Families Introduced {{!}} The Silicon Engine {{!}} Computer History Museum|website=computerhistory.org|language=en|access-date=2018-06-17}}{{Cite web|url=http://www.computerhistory.org/atchm/the-rise-of-ttl-how-fairchild-won-a-battle-but-lost-the-war/|title=The Rise of TTL: How Fairchild Won a Battle But Lost the War {{!}} Computer History Museum|website=computerhistory.org|date=13 July 2015 |at=See section: "Fairchild responds with TTL MSI"|language=en-US|access-date=2018-06-17}}
• Signetics 8200 and 8T00{{Cite book|url=https://archive.org/details/bitsavers_signeticsdcs8000SeriesTTLMSI_11847693|title=Signetics Digital 8000 Series TTL/MSI and Memories Data Book|publisher=Signetics Corporation|year=1972}}

The 7400 quad 2-input NAND gate was the first product in the series, introduced by Texas Instruments in a military grade metal flat package (5400W) in October 1964. The pin assignment of this early series differed from the de facto standard set by the later series in DIP packages (in particular, ground was connected to pin 11 and the power supply to pin 4, compared to pins 7 and 14 for DIP packages). The extremely popular commercial grade plastic DIP (7400N) followed in the third quarter of 1966.{{cite web | url=https://smithsonianchips.si.edu/texas/t_129.htm | title=The Chip Collection - TI Integrated Circuit Designer's Kit | publisher=Smithsonian Institution }}

The 5400 and 7400 series were used in many popular minicomputers in the 1970s and early 1980s. Some models of the DEC PDP-series "minis" used the 74181 ALU as the main computing element in the CPU. Other examples were the Data General Nova series and Hewlett-Packard 21MX, 1000, and 3000 series.

In 1965, typical quantity-one pricing for the SN5400 (military grade, in ceramic welded flat-pack) was around 22 USD.{{cite book |publisher= Allied Electronics |title= Allied Industrial Electronics Catalog #660 |location= Chicago, Illinois |year= 1966 |page= 35}} As of 2007, individual commercial-grade chips in molded epoxy (plastic) packages can be purchased for approximately US$0.25 each, depending on the particular chip.

File:NXP-74AHC00D-HD-HQ.jpg|Die of a 74AHC00D, manufactured by NXP

File:SN7400 1965.jpg|SN7400 die in the original flat package, manufactured by TI

File:TTL-00-die-schema.jpg|Die vs Schematic of a NAND gate in a 74H00 (Darlington transistor is visbile on the right)

File:7400 Circuit.svg|Schematic of one gate in a 7400

File:74LS00 Circuit.svg|Schematic of one gate in a 74LS00

File:Schéma DM74ALS00.png|Schematic of one gate in a 74ALS00

File:Logic ICs in size comparison.JPG|Size comparison of 74HC00 in DIP vs TSSOP package

File:Consommations TTL-HC.png) vs speed (Hz) comparison of various 7400 families]]

7400 series parts were constructed using bipolar junction transistors (BJT), forming what is referred to as transistor–transistor logic or TTL. Newer series, more or less compatible in function and logic level with the original parts, use CMOS technology or a combination of the two (BiCMOS). Originally the bipolar circuits provided higher speed but consumed more power than the competing 4000 series of CMOS devices. Bipolar devices are also limited to a fixed power-supply voltage, typically 5 V, while CMOS parts often support a range of supply voltages.

Milspec-rated devices for use in extended temperature conditions are available as the 5400 series. Texas Instruments also manufactured radiation-hardened devices with the prefix RSN, and the company offered beam-lead bare dies for integration into hybrid circuits with a BL prefix designation.{{cite book |last = The Engineering Staff |first = Texas Instruments |title = The TTL Data Book for Design Engineers |year = 1973 |edition = 1st |location = Dallas, Texas}}

Regular-speed TTL parts were also available for a time in the 6400 series{{snd}} these had an extended industrial temperature range of −40 °C to +85 °C. While companies such as Mullard listed 6400-series compatible parts in 1970 data sheets,Mullard FJH 101 Data Sheet, from the [http://www.datasheetarchive.com/preview/437512.html Mullard FJ Family TTL Integrated Circuits 1970 databook]. {{Webarchive|url=http://arquivo.pt/wayback/20160515111834/http://www.datasheetarchive.com/preview/437512.html |date=2016-05-15 }}. May 16, 2008 by 1973 there was no mention of the 6400 family in the Texas Instruments TTL Data Book. Texas Instruments brought back the 6400 series in 1989 for the SN64BCT540.{{cite book |title=BiCMOS Bus Interface Logic |url=http://www.bitsavers.org/components/ti/_dataBooks/1989_TI_BiCMOS_Bus_Interface_Logic_Data_Book.pdf |publisher=Texas Instruments |date=1989}} The SN64BCTxxx series is still in production as of 2023.{{cite web |title=SN64BCTxxx |url=https://www.ti.com/logic-voltage-translation/products.html#1192=-40%3B85&1498=Catalog&1512=BCT&sort=-1;asc& |publisher=Texas Instruments |access-date=2023-06-06}} Some companies have also offered industrial extended temperature range variants using the regular 7400-series part numbers with a prefix or suffix to indicate the temperature grade.

As integrated circuits in the 7400 series were made in different technologies, usually compatibility was retained with the original TTL logic levels and power-supply voltages. An integrated circuit made in CMOS is not a TTL chip, since it uses field-effect transistors (FETs) and not bipolar junction transistors (BJT), but similar part numbers are retained to identify similar logic functions and electrical (power and I/O voltage) compatibility in the different subfamilies.

Over 40 different logic subfamilies use this standardized part number scheme.{{page needed|date=July 2018}} The headings in the following table are: V_cc{{snd}} power-supply voltage; t_pd{{snd}} maximum gate delay; I_OL{{snd}} maximum output current at low level; I_OH{{snd}} maximum output current at high level; t_pd, I_OL, and I_OH apply to most gates in a given family. Driver or buffer gates have higher output currents.

class="wikitable sortable"
Code ! Family ! Vcc ! tpd ! IOL ! IOH ! Year{{efn|1=A question mark indicates that the year of introduction is based on the earliest data sheet or the revision history in a data sheet.}} ! Description
colspan=8| Bipolar TTL families{{efn|name=std5v|1=Parameters are shown for the 2-input NAND gate (74x00 or 74x1G00) at Vcc = 5 V,Ta = 25 °C, CL = 50 pF.}}
style="text-align:left" | 74 | Standard TTL | 5 V ±5% | 22 ns | 16 mA | −0.4 mA | 1966{{rp|6-2}} | The original 7400 logic family. Contains no characters between the "74" and the part number.{{rp|3–5}}
style="text-align:left" | 74H | High-Speed | 5 V ±5% | 10 ns | 20 mA | −0.5 mA | 1967{{rp|72}} | Higher speed than the original 74 series, at the expense of power dissipation. TTL logic levels.{{rp|6-2}}{{rp|3–6}}
style="text-align:left" | 74L | Low-Power | 5 V ±5% | 60 ns | 3.6 mA | −0.2 mA | 1967{{rp|72}} | Same technology as the original 74 family, but with larger resistors to lower power consumption at the expense of gate speed. TTL logic levels. Now obsolete.{{rp|6-2}}
style="text-align:left" | 74S | Schottky | 5 V ±5% | 5 ns | 20 mA | −1 mA | 1969{{rp|72}} | Implemented using Schottky diode. High current draw. TTL logic levels.{{rp|6-2}}{{rp|3–9}}
style="text-align:left" | 74LS | Low-Power Schottky | 5 V ±5% | 15 ns | 8 mA | −0.4 mA | 1971{{rp|72}} | Same technology as the 74S family, but with lower power consumption (2 mW) at the expense of gate speed. TTL logic levels.{{rp|6-2}}{{rp|3–8}}
style="text-align:left" | 74F | FAST | 5 V ±5% | 3.9 ns | 20 mA | −1 mA | 1978 | Originally Fairchild's version of the 74AS family. TTL logic levels.{{rp|2-9,4-3}}
style="text-align:left" | 74ALS | Advanced Low-Power Schottky | 5 V ±10% | 11 ns | 8 mA | −0.4 mA | 1980{{rp|72}} | Same technology as the 74AS family, but with lower power consumption at the expense of gate speed. TTL logic levels.{{rp|2–4}}
style="text-align:left" | 74AS | Advanced Schottky | 5 V ±10% | 4.5 ns | 20 mA | −2 mA | 1982{{rp|72}} | Same technology as the 74S family, but with "miller killer" circuitry to speed up low-to-high transitions. TTL logic levels.{{rp|2–5}}
colspan=8| CMOS and BiCMOS families{{efn|name=std5v}}
style="text-align:left" | 74C | CMOS | 3.0–15 V | 60 ns | 0.36 mA | −0.36 mA | 1975{{rp|1}} | 74C is standard CMOS, similar to buffered 4000 (4000B) series. Input levels not compatible with TTL families. The 4000A series was introduced in 1968, the 4000B around 1975.
style="text-align:left" | 74HC{{efn|name=u04|1=The letter "U" when added to the family code (e.g. 74HCU) indicates an unbuffered CMOS circuit. Typically, there is only one unbuffered circuit in a family: the hex inverter (74x04). Unbuffered circuits are intended for analogue applications such as crystal oscillators.{{rp|4–11}}{{rp|8-17,10-15}} }} | High-Speed CMOS | 2.0–6.0 V | 15 ns | 4 mA | −4 mA | 1983?{{rp|4-2}} | Similar performance to 74LS. CMOS logic levels.{{cite web |title=High-speed CMOS HC(T) |url=https://www.nexperia.com/products/analog-logic-ics/logic/family/HC-T/ |publisher=Nexperia |access-date=2023-06-03}}{{rp|4-2}}
style="text-align:left" | 74HCT | High-Speed CMOS | 5 V ±10% | 15 ns | 4.8 mA | −4.8 mA | 1983?{{rp|5-2}} | Similar performance to 74LS. TTL logic levels.{{rp|5-2}}
style="text-align:left" | 74HCTLS | High-Speed CMOS | 5 V ±10% | 15 ns | 8 mA | −4 mA | 1988?{{rp|417}} | Samsung's version of the 74HCT series. TTL logic levels.{{rp|417}}
style="text-align:left" | 74HCS | Schmitt-Trigger Integrated High-Speed CMOS | 2.0–6.0 V | 13 ns | 7.8 mA | −7.8 mA | 2019?{{cite web |title=Reduce Noise and Save Power with the New HCS Logic Family |url=https://www.ti.com/lit/an/scea069a/scea069a.pdf |website=Texas Instruments |archive-url=https://web.archive.org/web/20220615143359/https://www.ti.com/lit/an/scea069a/scea069a.pdf |archive-date=June 15, 2022 |date=April 2020 |url-status=live}} | Schmitt triggers on all inputs. CMOS logic levels.
style="text-align:left" | 74AHC{{efn|name=u04}} | Advanced High-Speed CMOS | 2.0–5.5 V | 5.5 ns | 8 mA | −8 mA | | Up to three times as fast as the 74HC family. 5 V tolerant inputs. CMOS logic levels.{{cite web |title=Advanced High-speed CMOS AHC(T) |url=https://www.nexperia.com/products/analog-logic-ics/logic/family/AHC-T/ |publisher=Nexperia |access-date=2023-06-03}}{{rp|3–5}} Equivalent to 74VHC.{{rp|6}}
style="text-align:left" | 74AHCT | Advanced High-Speed CMOS | 5 V ±10% | 6.9 ns | 8 mA | −8 mA | 1986? | Up to three times as fast as the 74HCT family. TTL logic levels.{{rp|3–11}} Equivalent to 74VHCT.{{rp|6}}
style="text-align:left" | 74VHC{{efn|name=u04}} | Very High-Speed CMOS | 2.0–5.5 V | 5.5 ns | 8 mA | −8 mA | 1992? | 5 V tolerant inputs.{{cite web |title=Very High-speed CMOS VHC(T) |url=https://www.nexperia.com/products/analog-logic-ics/logic/family/VHC-T/ |publisher=Nexperia |access-date=2023-06-03}} Equivalent to 74AHC.{{rp|6}} CMOS logic levels.
style="text-align:left" | 74VHCT | Very High-Speed CMOS | 5 V ±10% | 6.9 ns | 8 mA | −8 mA | 1995? | Equivalent to 74AHCT.{{rp|6}} TTL logic levels.
style="text-align:left" | 74AC | Advanced CMOS | 2.0–6.0 V | 8 ns | 24 mA | −24 mA | 1985{{rp|1–3}} | CMOS logic levels.{{rp|4-3}} Outputs may cause ground bounce.
style="text-align:left" | 74ACT | Advanced CMOS | 5 V ±10% | 8 ns | 24 mA | −24 mA | 1985{{rp|1–3}} | TTL logic levels.{{rp|AC-15}} Outputs may cause ground bounce.
style="text-align:left" | 74ACQ | Advanced CMOS with "quiet" outputs | 2.0–6.0 V | 6.5 ns | 24 mA | −24 mA | 1989 | Fairchild's "Quiet Series" offering lower ringing and ground bounce on state transitions. Bus interface circuits only in this family. CMOS logic levels.
style="text-align:left" | 74ACTQ | Advanced CMOS with "quiet" outputs | 5 V ±10% | 7.5 ns | 24 mA | −24 mA | 1989 | Fairchild's "Quiet Series" offering lower ringing and ground bounce on state transitions. TTL logic levels.
style="text-align:left" | 74ABT{{efn|name=hbus}}{{efn|name=rout}} | Advanced BiCMOS | 5 V ±10% | 3.6 ns | 20 mA | −15 mA | 1991? | TTL logic levels.
style="text-align:left" | 74LVCE | Low-Voltage CMOS | 1.4–5.5 V | 3.6 ns | 32 mA | −32 mA | 2010? | CMOS logic levels. 5 V tolerant inputs. Extended supply voltage range and higher speed compared to 74LVC.
colspan=8| Low-voltage CMOS and BiCMOS families{{efn|1=Parameters are shown for the 2-input NAND gate (74x00 or 74x1G00) at Vcc = 3.3 V,Ta = 25 °C, CL = 50 pF.}}
style="text-align:left" | 74LVT{{efn|name=hbus}}{{efn|name=zbus|1=The letter "Z" when added to the family code (e.g. 74LVTZ) indicates a circuit where a high-impedance state of all outputs is guaranteed when the power supply voltage drops below a certain threshold.}} | Low-Voltage BiCMOS | 2.7–3.6 V | 4.1 ns | 32 mA | −20 mA | 1992{{rp|1}} | TTL logic levels, 5 V tolerant inputs and outputs. Note, original 1992 LVTs had bus-hold. However a 1996 redesign of LVT emphasized performance, so 1992 LVTs were renamed LVTH to denote the bus-hold feature explicitly in the device name. LVTH also added the high impedance during power up/down feature.
style="text-align:left" | 74LVQ | Low-Voltage Quiet CMOS | 2.0–3.6 V | 9.5 ns | 12 mA | −12 mA | 1992{{rp|1–3}} | TTL logic levels. Guaranteed incident-wave switching for 75 Ω lines.{{rp|1–3}}
style="text-align:left" | 74LV{{efn|name=u04}} | Low-Voltage CMOS | 2.7–3.6 V | 18 ns | 6 mA | −6 mA | 1993?{{rp|10–3}} | TTL logic levels.{{rp|10–3}}
style="text-align:left" | 74LVC{{efn|name=u04}}{{efn|name=hbus|1=The letter "H" when added to the family code (e.g. 74LVCH) indicates a circuit with a bus-hold feature. That is, if the input bus goes to a high-impendance or floating state then the outputs keep their state according to the last valid input state. This eliminates the need for pull-up resistors or pull-down resistors. "H" can also be combined with "R"{{efn|name=rout}} (e.g. 74ALVCHR).{{rp|1-5, 4-19}}{{rp|3-15, 8-103}}{{rp|3-3}} }}{{efn|name=rout|1=The letter "R" when added to the family code (e.g. 74LCXR) indicates a circuit with integrated resistors at the outputs in order to reduce overshoot and undershoot of the output signal.{{rp|1-5, 4-23}}{{rp|3–51}}{{rp|3–53}} }}{{efn|name=zbus}} | Low-Voltage CMOS | 2.0–3.6 V | 6 ns | 24 mA | −24 mA | 1993?{{rp|8-5}} | TTL logic levels, 5 V tolerant inputs.{{rp|8-5}}
style="text-align:left" | 74ALVC{{efn|name=hbus}}{{efn|name=rout}} | Advanced Low-Voltage CMOS | 1.65–3.6 V | 3.0 ns | 24 mA | −24 mA | 1994?{{rp|3–21}} | 3.3 V tolerant inputs and outputs.{{cite web |title=ALVC - Advanced Low-Voltage CMOS ALVC(H) |url=https://www.nexperia.com/products/analog-logic-ics/logic/family/ALVC/ |publisher=Nexperia |access-date=2023-06-04}}
style="text-align:left" | 74VCX | Advanced Low-Voltage CMOS | 1.20–3.6 V | 3.1 ns | 24 mA | −24 mA | 1997 | Fairchild's version of 74ALVC.{{rp|6}} 3.3 V tolerant inputs and outputs.
style="text-align:left" | 74LCX{{efn|name=u04}}{{efn|name=hbus}}{{efn|name=rout}}{{efn|name=zbus}} | Low-Voltage High-Speed CMOS | 2.0–3.6 V | 4.3 ns | 24 mA | −24 mA | 1994 | Fairchild's version of 74LVC.{{rp|6}} TTL logic levels. 5 V tolerant inputs and outputs.
style="text-align:left" | 74LVX{{efn|name=u04}} | Low-Voltage High-Speed CMOS | 2.0–3.6 V | 9.7 ns | 4 mA | −4 mA | 1994? | TTL logic levels. 5 V tolerant inputs. Faster than 74VHC at low voltages.
style="text-align:left" | 74AUP | Advanced Ultra-Low-Power | 0.80–3.6 V | 3.8 ns | 4 mA | −4 mA | 2004? | 3.3 V tolerant hysteresis inputs.
style="text-align:left" | 74G | Gigahertz | 1.65–3.6 V | 1.5 ns | 12 mA | −12 mA | 2006 | Speeds over 1 gigahertz with 5 V tolerant inputs.
colspan=8|Very-low-voltage CMOS families
style="text-align:left" | 74AUC{{efn|name=u04}}{{efn|name=hbus}} | Advanced Ultra-Low-Voltage CMOS | 0.80–2.7 V | 2.0 ns | 9 mA | −9 mA | 2002? | 3.3 V tolerant inputs.
colspan=8| Limited families for special applications{{efn|1=There are no simple gates in these families. Parameters are for a transceiver (74x245, 74x16245, or similar).}}
style="text-align:left" | 74SC | Standard CMOS | 5 V ±5% | 30 ns | 10 mA | −10 mA | 1981? | Performance like Standard TTL at lower power consumption (intermediate step between 74C and 74HC). No simple gates in this family.
style="text-align:left" | 74FCT | Fast CMOS | 5 V ±5% | 7 ns | 64 mA | −15 mA | 1986? | Manufactured in CMOS or BiCMOS technology. Performance like 74F at lower power consumption. No simple gates in this family.
style="text-align:left" | 74BCT | BiCMOS | 5 V ±10% | 6.6 ns | 64 mA | −15 mA | 1988? | TTL logic levels. Bus interface circuits only in this family.
style="text-align:left" | 74FBT | Fast BiCMOS | 5 V ±10% | 4.1 ns | 64 mA | −24 mA | 1990?{{rp|6.59}} | Bus interface circuits only in this family.{{rp|6.59}}
style="text-align:left" | 74FB | Futurebus | 5 V ±5% | 5 ns | 80 mA | – {{efn|name=oconly|B-side outputs are all open-collector in this family.}} | 1992?{{rp|7-3}} | Futurebus+ interface circuits only in this family.{{rp|7-3}}
style="text-align:left" | 74GTL | Gunning transceiver logic | 5 V ±5% | 4 ns | 64 mA | −32 mA | 1993?{{rp|12–17}} | Bus interface circuits only in this family.{{rp|12–3}}
style="text-align:left" | 74GTLP{{efn|name=hbus}} | Gunning transceiver logic Plus | 3.15–3.45 V | 7.5 ns | 50 mA | – {{efn|name=oconly}} | 1996 | Bus interface circuits only in this family. Fairchild's improved version of 74GTL (higher bus speed, lower ground bounce).{{rp|3-3}}
style="text-align:left" | 74CBT{{efn|name=hbus}}{{efn|name=rout}} | Crossbar Switch | 5 V ±10% | 0.25 ns | 64 mA | −15 mA | 1992?{{rp|5-3}} | FET bus switches only in this family.{{rp|5-3}}
style="text-align:left" | 74FST | Crossbar Switch | 5 V ±5% | 0.25 ns | 30 mA | −15 mA | 1995?{{rp|10.1}} | FET bus switches only in this family.{{rp|10.1}} IDT's version of 74CBT.{{rp|6}}
style="text-align:left" | 74CBTLV | Crossbar Switch Low-Voltage | 2.3–3.6 V | 0.25 ns | 64 mA | −15 mA | 1997?{{rp|7–15}} | FET bus switches only in this family.{{rp|7–15}}
style="text-align:left" | 74ALB | Advanced Low-Voltage BiCMOS | 3.0–3.6 V | 2.0 ns | 25 mA | −25 mA | 1996?{{rp|2–3}} | Bus interface circuits only in this family.{{rp|2–3}}
style="text-align:left" | 74LPT | Low-Voltage CMOS | 2.7–3.6 V | 4.1 ns | 24 mA | −24 mA | 1996?{{rp|3–84}} | Bus interface circuits only in this family. 5 V tolerant inputs.{{rp|3–84}}
style="text-align:left" | 74AVC{{efn|name=hbus}} | Advanced Very-Low-Voltage CMOS | 1.40–3.6 V | 1.7 ns | 12 mA | −12 mA | 1998? | 3.3 V tolerant inputs. Bus interface circuits only in this family.
style="text-align:left" | 74ALVT{{efn|name=hbus}} | Advanced Low-Voltage BiCMOS | 2.3–3.6 V | 2.5 ns | 64 mA | −32 mA | 1999? | 5 V tolerant inputs and outputs.{{cite web |title=ALVT - Advanced Low-Voltage BiCMOS Technology (ALVT) |url=https://www.nexperia.com/products/analog-logic-ics/logic/family/ALVT/ |publisher=Nexperia |access-date=2023-06-04}} Bus interface circuits only in this family.
style="text-align:left" | 74AHCV | Advanced High-Speed CMOS | 1.8–5.5 V | 7.5 ns | 16 mA | −16 mA | 2016? | CMOS logic levels. 5 V tolerant inputs. Extended supply voltage range and higher speed compared to 74AHC. Bus interface circuits only in this family. See also 74LVCE.
style="text-align:left" | 74AXC{{efn|name=hbus}} | Advanced Extremely-Low-Voltage CMOS | 0.65–3.6 V | 4 ns | 12 mA | −12 mA | 2018? | 3.3 V tolerant inputs. Bus interface circuits only in this family.
style="text-align:left" | 74LXC{{efn|name=hbus}} | Low-Voltage CMOS | 1.1–5.5 V | 7 ns | 32 mA | −32 mA | 2019? | Extended supply voltage range compared to 74LVC. Bus interface circuits only in this family. See also 74LVCE.

{{notelist}}

File:Niveaux logiques CMOS-TTL-LVTTL.png

Many parts in the CMOS HC, AC, AHC, and VHC families are also offered in "T" versions (HCT, ACT, AHCT and VHCT) which have input thresholds that are compatible with both TTL and 3.3 V CMOS signals. The non-T parts have conventional CMOS input thresholds, which are more restrictive than TTL thresholds. Typically, CMOS input thresholds require high-level signals to be at least 70% of Vcc and low-level signals to be at most 30% of Vcc. (TTL has the input high level above 2.0 V and the input low level below 0.8 V, so a TTL high-level signal could be in the forbidden middle range for 5 V CMOS.)

The 74H family is the same basic design as the 7400 family with resistor values reduced. This reduced the typical propagation delay from 9 ns to 6 ns but increased the power consumption. The 74H family provided a number of unique devices for CPU designs in the 1970s. Many designers of military and aerospace equipment used this family over a long period and as they need exact replacements, this family is still produced by Lansdale Semiconductor.[http://www.lansdale.com Lansdale Semiconductor home page].

The 74S family, using Schottky circuitry, uses more power than the 74, but is faster. The 74LS family of ICs is a lower-power version of the 74S family, with slightly higher speed but lower power dissipation than the original 74 family; it became the most popular variant once it was widely available. Many 74LS ICs can be found in microcomputers and digital consumer electronics manufactured in the 1980s and early 1990s.

The 74F family was introduced by Fairchild Semiconductor and adopted by other manufacturers; it is faster than the 74, 74LS and 74S families.

Through the late 1980s and 1990s newer versions of this{{which|date=March 2019}} family were introduced to support the lower operating voltages used in newer CPU devices.

class="wikitable" style="margin: 1em auto 1em auto; text-align:center;" width="60%;" |+ Characteristics of selected 7400 series families (V{{sub|DD}} = 5 V){{cite book |last1=Maini |first1=Anil |title=Digital Electronics: Principles, Devices and Applications |url=https://archive.org/details/digitalelectroni00main_995 |url-access=limited |date=2007 |publisher=John Wiley & Sons |isbn=978-0-470-03214-5 |page=[https://archive.org/details/digitalelectroni00main_995/page/n188 168]}}
Parameter ! style="background: #ffdead;" | 74C ! style="background: #ffdead;" | 74HC ! style="background: #ffdead;" | 74AC ! style="background: #ffdead;" | 74HCT ! style="background: #ffdead;" | 74ACT ! Units
V{{sub|IH}} (min) | colspan="3" | 3.5 | colspan="2" | 2.0 | V
V{{sub|OH}} (min) | 4.5 | colspan="4" | 4.9 | V
V{{sub|IL}} (max) | 1.5 | 1.0 | 1.5 | colspan="2" | 0.8 | V
V{{sub|OL}} (max) | 0.5 | colspan="4" | 0.1 | V
I{{sub|IH}} (max) | colspan="5" | 1 | μA
I{{sub|IL}} (max) | colspan="5" | 1 | μA
I{{sub|OH}} (max) | 0.4 | 4.0 | 24 | 4.0 | 24 | mA
I{{sub|OL}} (max) | 0.4 | 4.0 | 24 | 4.0 | 24 | mA
t{{sub|P}} (max) | 50 | 8 | 4.7 | 8 | 4.7 | ns

File:74 Series Code.svg

File:74HC595.jpg 74HC595 shift registers on a PCB. This 74HC variant uses CMOS signaling voltage levels while the 74HCT595 variant uses TTL signalling levels.]]

File:74HC595-HD.jpg of a 74HC595 8-bit shift register]]

{{See also|List of 7400-series integrated circuits}}

Part number schemes varied by manufacturer. The part numbers for 7400-series logic devices often use the following designators:

• Often first, a two or three letter prefix, denoting the manufacturer and flow class of the device. These codes are no longer closely associated with a single manufacturer, for example, Fairchild Semiconductor manufactures parts with MM and DM prefixes, and no prefixes. Examples:
• SN: Texas Instruments using a commercial processing
• SNV: Texas Instruments using military processing
• M: ST Microelectronics
• DM: National Semiconductor
• UT: Cobham PLC
• SG: Sylvania
• RD: RIFA AB
• Two digits for temperature range. Examples:
• 54: military temperature range
• 64: short-lived historical series with intermediate "industrial" temperature range
• 74: commercial temperature range device
• Zero to four letters denoting the logic subfamily. Examples:
• zero letters: basic bipolar TTL
• LS: low power Schottky
• HCT: High-speed CMOS compatible with TTL
• Two or more arbitrarily assigned digits that identify the function of the device. There are hundreds of different devices in each family.
• Additional suffix letters and numbers may be appended to denote the package type, quality grade, or other information, but this varies widely by manufacturer.

For example, "SN5400N" signifies that the part is a 7400-series IC probably manufactured by Texas Instruments ("SN" originally meaning "Semiconductor Network"{{cite book |last1=Morris |first1=Robert L. |last2=Miller |first2=John R. |title=Designing with TTL Integrated Circuits |year=1971 |page=[https://archive.org/details/bitsavers_tiTexasInsSeriesMorrisDesigningWithTTLIntegratedCi_11927910/page/n25 15] |bibcode=1971dwti.book.....M |url=https://archive.org/details/bitsavers_tiTexasInsSeriesMorrisDesigningWithTTLIntegratedCi_11927910}}) using commercial processing, is of the military temperature rating ("54"), and is of the TTL family (absence of a family designator), its function being the quad 2-input NAND gate ("00") implemented in a plastic through-hole DIP package ("N").

Many logic families maintain a consistent use of the device numbers as an aid to designers. Often a part from a different 74x00 subfamily could be substituted ("drop-in replacement") in a circuit, with the same function and pin-out yet more appropriate characteristics for an application (perhaps speed or power consumption), which was a large part of the appeal of the 74C00 series over the competing CD4000B series, for example. But there are a few exceptions where incompatibilities (mainly in pin-out) across the subfamilies occurred, such as:

• some flat-pack devices (e.g. 7400W) and surface-mount devices,
• some of the faster CMOS series (for example 74AC),
• a few low-power TTL devices (e.g. 74L86, 74L9 and 74L95) have a different pin-out than the regular (or even 74LS) series part.{{cite book

| last = The Engineering Staff

| first = Texas Instruments

| title = The TTL Data Book for Design Engineers

| year = 1973

| edition = 1st

| location = Dallas, Texas

}}

• five versions of the 74x54 (4-wide AND-OR-INVERT gates IC), namely 7454(N), 7454W, 74H54, 74L54W and 74L54N/74LS54, are different from each other in pin-out and/or function,{{cite book

| last = The Engineering Staff

| first = National Semiconductor Corporation

| title = National Semiconductor TTL DATA BOOK

| year = 1976

| pages = 1–14

| location = Santa Clara California

}}

File:K131la3.jpg

File:Electronic component ttl.jpg

File:CDB493E.jpg

Some manufacturers, such as Mullard and Siemens, had pin-compatible TTL parts, but with a completely different numbering scheme; however, data sheets identified the 7400-compatible number as an aid to recognition.

At the time the 7400 series was being made, some European manufacturers (that traditionally followed the Pro Electron naming convention), such as Philips/Mullard, produced a series of TTL integrated circuits with part names beginning with FJ. Some examples of FJ series are:

• FJH101 (=7430) single 8-input NAND gate,
• FJH131 (=7400) quadruple 2-input NAND gate,
• FJH181 (=7454N or J) 2+2+2+2 input AND-OR-NOT gate.

The Soviet Union started manufacturing TTL ICs with 7400-series pinout in the late 1960s and early 1970s, such as the K155ЛA3, which was pin-compatible with the 7400 part available in the United States, except for using a metric spacing of 2.5 mm between pins instead of the {{convert|0.1|in|mm|2}} pin-to-pin spacing used in the west.{{cite web

| url = http://www.gaw.ru/html.cgi/txt/doc/marker/logic.htm

| title = Relation between names of foreign and Russian logic chips

| access-date = 26 March 2007

| language = ru

| archive-url= https://web.archive.org/web/20070228032645/http://www.gaw.ru/html.cgi/txt/doc/marker/logic.htm

| archive-date= 28 February 2007

| url-status= live}}

Another peculiarity of the Soviet-made 7400 series was the packaging material used in the 1970s–1980s. Instead of the ubiquitous black resin, they had a brownish-green body colour with subtle swirl marks created during the moulding process. It was jokingly referred to in the Eastern Bloc electronics industry as the "elephant-dung packaging", due to its appearance.{{citation needed|date=August 2019}}

The Soviet integrated circuit designation is different from the Western series:

• the technology modifications were considered different series and were identified by different numbered prefixes – К155 series is equivalent to plain 74, К555 series is 74LS, К1533 is 74ALS, etc.;
• the function of the unit is described with a two-letter code followed by a number:
• the first letter represents the functional group – logical, triggers, counters, multiplexers, etc.;
• the second letter shows the functional subgroup, making the distinction between logical NAND and NOR, D- and JK-triggers, decimal and binary counters, etc.;
• the number distinguishes variants with different number of inputs or different number of elements within a die – ЛА1/ЛА2/ЛА3 (LA1/LA2/LA3) are 2 four-input / 1 eight-input / 4 two-input NAND elements respectively (equivalent to 7420/7430/7400).

Before July 1974 the two letters from the functional description were inserted after the first digit of the series. Examples: К1ЛБ551 and К155ЛА1 (7420), К1ТМ552 and К155ТМ2 (7474) are the same ICs made at different times.

Clones of the 7400 series were also made in other Eastern Bloc countries:

• Bulgaria (Mikroelektronika Botevgrad) used a designation somewhat similar to that of the Soviet Union, e.g. 1ЛБ00ШМ (1LB00ShM) for a 74LS00. Some of the two-letter functional groups were borrowed from the Soviet designation, while others differed. Unlike the Soviet scheme, the two or three digit number after the functional group matched the western counterpart. The series followed at the end (i.e. ШМ for LS). Only the LS series is known to have been manufactured in Bulgaria.{{cite book

|title=Техническа информация 1985

|trans-title=Technical information 1985

|publisher=NPSK Botevgrad

|url=https://www.sandacite.bg/%D0%BD%D0%BE%D0%B2%D0%B0-%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0-%D0%B4%D0%BD%D0%BF%D1%81%D0%BA-%D0%B1%D0%BE%D1%82%D0%B5%D0%B2%D0%B3%D1%80%D0%B0%D0%B4-%D1%82%D0%B5%D1%85%D0%BD%D0%B8%D1%87%D0%B5%D1%81%D0%BA/

|language=bg

|access-date=2017-11-11

}}{{rp|pages=8–11}}

• Czechoslovakia (TESLA) used the 7400 numbering scheme with manufacturer prefix MH. Example: MH7400. Tesla also produced industrial grade (8400, −25 ° to 85 °C) and military grade (5400, −55 ° to 125 °C) ones.
• Poland (Unitra CEMI) used the 7400 numbering scheme with manufacturer prefixes UCA for the 5400 and 6400 series, as well as UCY for the 7400 series. Examples: UCA6400, UCY7400. Note that ICs with the prefix MCY74 correspond to the 4000 series (e.g. MCY74002 corresponds to 4002 and not to 7402).
• Hungary (Tungsram, later Mikroelektronikai Vállalat / MEV) also used the 7400 numbering scheme, but with manufacturer suffix – 7400 is marked as 7400APC.
• Romania (I.P.R.S.) used a trimmed 7400 numbering with the manufacturer prefix CDB (example: CDB4123E corresponds to 74123) for the 74 and 74H series, where the suffix H indicated the 74H series.{{cite book

|title=Digital Integrated Circuits

|publisher=I.P.R.S. Băneasa

|place=Bucharest

|date=1976

|url=http://yo3kxl.netxpert.ro/docs/cataloage_IPRS/Circuite%20Integrate%20Digitale%20-%20Catalog%20IPRS.pdf

|access-date=2019-01-18

}} For the later 74LS series, the standard numbering was used.{{cite book

|title=Full Line Condensed Catalog 1990

|publisher=I.P.R.S. Băneasa

|place=Bucharest

|date=1990

|url=http://yo3kxl.netxpert.ro/docs/cataloage_IPRS/FULL_LINE_CONDENSED_CATALOG%201990%20IPRS.pdf

|access-date=2019-01-19

}}

• East Germany (HFO) also used trimmed 7400 numbering without manufacturer prefix or suffix. The prefix D (or E) designates digital IC, and not the manufacturer. Example: D174 is 7474. 74LS clones were designated by the prefix DL; e.g. DL000 = 74LS00. In later years East German made clones were also available with standard 74* numbers, usually for export.[https://www-user.tu-chemnitz.de/~heha/basteln/Konsumg%C3%BCter/DDR-Halbleiter/ GDR semiconductor datasheet comparison] {{in lang|de}}.

A number of different technologies were available from the Soviet Union,{{cite book

| first=Л. И.

| last=Ниссельсон

| title=Цифровые и аналоговые интегральные микросхемы

| publisher=Радио и связь

| year=1989

| language=ru

| isbn=5256002597

}}

{{cite web

| title=Активные элементы

| publisher=Музей электронных раритетов

| url=http://www.155la3.ru/aktiv.htm

| language=ru

| access-date=24 March 2016

}}

{{cite web

| first=Виктор Романович

| last=Козак

| title=Номенклатура и аналоги отечественных микросхем

| url=http://www.inp.nsk.su/~kozak/adv/advh0.htm

| language=ru

| date=24 May 2014

| access-date=24 March 2016

}}

{{cite book

| first=Gerd

| last=Hillebrand

| title=Importbauelemente Integrierte Schaltungen

| trans-title=Imported integrated circuits

| series=Information Applikation Mikroelektronik

| volume=6

| publisher=Kammer der Technik, Vorstand des Bezirksverbandes Frankfurt (Oder)

| date=30 June 1980

| url=http://datasheet.datasheetarchive.com/originals/scans/Scans-048/DSAGER00098.pdf

| access-date=2 November 2016

| language=de

}}

Czechoslovakia,{{cite web

| url=http://www.teslakatalog.cz/io.php

| title=Integrované obvody

| language=cs

| access-date=17 March 2016

}}

{{cite book

| first=Gerd

| last=Hillebrand

| title=RGW-Typenübersicht + Vergleich — Teil 2: RGW

| trans-title=Comecon type overview + comparison — Part 2: Comecon

| series=Information Applikation Mikroelektronik

| volume=50

| publisher=Kammer der Technik, Vorstand des Bezirksverbandes Frankfurt (Oder)

| date=12 September 1988

| url=http://datasheet.datasheetarchive.com/originals/scans/Scans-048/DSAGER000142.pdf

| access-date=11 November 2017

| language=de

}}

Poland, and East Germany. The 8400 series in the table below indicates an industrial temperature range from −25 °C to +85 °C (as opposed to −40 °C to +85 °C for the 6400 series).

File:YUNTEN.gif]]

class="wikitable" |+ Prefixes of Eastern European series
! colspan="2" | Soviet Union ! colspan="3" | Czechoslovakia ! colspan="3" | Poland ! colspan="3" | East Germany
! 5400 ! style="text-align:left" | 7400 ! 5400 ! style="text-align:left" | 7400 ! 8400 ! 5400 ! 6400 ! style="text-align:left" | 7400 ! 6400 ! style="text-align:left" | 7400 ! 8400
style="text-align:left" | 74 | 133 | К155 | MH54 | MH74 | MH84 | UCA54 | UCA64 | UCY74 | | D1 | E1
style="text-align:left" | 74L | 134,{{efn|The pin assignment of the 134 series mostly follows Texas Instruments' original flat-pack series, i.e. ground on pin 11 and power on pin 4.}} 136 | КР134, К158 | | | | | | | | |
style="text-align:left" | 74H | 130 | К131 | | | | | UCA64H | UCY74H | | D2 | E2
style="text-align:left" | 74S | 530 | КР531 | MH54S | MH74S | MH84S | | | UCY74S | | DS |
style="text-align:left" | 74LS | 533 | К555 | | | | | | UCY74LS | | DL...D | DL...DG
style="text-align:left" | 74AS | 1530 | КР1530 | | | | | | | | |
style="text-align:left" | 74ALS | 1533 | КР1533 | MH54ALS | MH74ALS | | | | | | |
style="text-align:left" | 74F | 1531 | КР1531 | | | | | | | | |
style="text-align:left" | 74HC | 1564 | КР1564 | | | | | | | | |
style="text-align:left" | 74HCT | 5564 | | | | | | | | U74HCT...DK | |
style="text-align:left" | 74AC | 1554 | КР1554 | | | | | | | | |
style="text-align:left" | 74ACT | 1594 | КР1594 | | | | | | | | |
style="text-align:left" | 74LVC | 5574 | | | | | | | | | |
style="text-align:left" | 74VHC | 5584 | | | | | | | | | |

{{notelist}}

Around 1990 the production of standard logic ceased in all Eastern European countries except the Soviet Union and later Russia and Belarus. As of 2016, the series 133, К155, 1533, КР1533, 1554, 1594, and 5584 were in production at "Integral" in Belarus,{{cite web

| title=Интегральные микросхемы

| trans-title=Integrated circuits

| publisher=OAO "Integral"

| place=Minsk

| url=http://www.integral.by/ru/products/integrated-circuits

| language=ru

| access-date=24 May 2016

}}

as well as the series 130 and 530 at "NZPP-KBR",{{cite web

| title=Продукция

| trans-title=Products

| publisher=OAO "NZPP-KBR" (former "Elkor")

| place=Nalchik

| url=http://www.nzpp-kbr.ru/index.php?Page=page_212

| language=ru

| access-date=5 June 2016

}}

134 and 5574 at "VZPP",{{cite web

| title=Каталог изделий

| trans-title=Product catalog

| publisher=OAO "VZPP-S"

| place=Voronezh

| url=http://www.vzpp-s.ru/production/catalog.pdf

| language=ru

| access-date=30 May 2016

}}

533 at "Svetlana",{{cite web

| title=Каталог продукции

| trans-title=Product catalog

| publisher=ZAO Svetlana Semiconductors

| place=Saint Petersburg

| url=http://svetpol.ru/produktsiya/

| language=ru

| access-date=30 May 2016

| archive-date=6 October 2017

| archive-url=https://archive.today/20171006102615/http://svetpol.ru/produktsiya/

| url-status=dead

}}

1564, К1564, КР1564 at "NZPP",{{cite web

| title=ПРОДУКЦИЯ

| trans-title=Products

| publisher=AO NZPP

| place=Novosibirsk

| url=http://www.nzpp.ru/product/

| language=ru

| access-date=31 May 2016

}}

1564, К1564 at "Voshod",{{cite web

| title=Микросхемы

| trans-title=Integrated circuits

| publisher=AO "Voshod"

| place=Kaluga

| url=http://www.voshod-krlz.ru/catalog/2

| language=ru

| access-date=8 June 2016

}}

1564 at "Exiton",{{cite web

| title=Интегральные микросхемы

| trans-title=Integrated circuits

| publisher=OAO "Exiton"

| place=Moscow

| url=https://okbexiton.ru/pr_ic.php

| archive-url=https://web.archive.org/web/20220317104417/https://okbexiton.ru/pr_ic.php

| archive-date=17 March 2022

| language=ru

| access-date=30 September 2022

}}

and 133, 530, 533, 1533 at "Mikron" in Russia.{{cite web

| title=Микросхемы ПАО Микрон 2020

| trans-title=Integrated Circuits PAO Mikron 2020

| publisher=Mikron

| url=https://413100.selcdn.ru/upload-153a6b408c99eadfc8d7d3c5576481d8/iblock/05d/05d7224966d072bbbc986716f3e32ecc/katalog+VPK_2020.pdf

| language=ru

| access-date=16 February 2021

}}

The Russian company Angstrem manufactures 54HC circuits as the 5514БЦ1 series, 54AC as the 5514БЦ2 series, and 54LVC as the 5524БЦ2 series.{{cite web

| title=Каталог продукции

| trans-title=Product catalog

| publisher=Angstrem

| place=Zelenograd

| url=https://www.angstrem.ru/pdf/2022/%D0%9A%D0%B0%D1%82%D0%B0%D0%BB%D0%BE%D0%B3%20%C2%AB%D0%90%D0%BD%D0%B3%D1%81%D1%82%D1%80%D0%B5%D0%BC%C2%BB,%20%D0%BF%D1%80%D0%BE%D0%B4%D1%83%D0%BA%D1%86%D0%B8%D1%8F%202022.pdf

| language=ru

| date=2022

| access-date=22 September 2022

}}

As of 2024, the 133, 136, and 1533 series are in production at Kvazar Kyiv in Ukraine.{{cite web

| title=ПРОДУКЦІЯ ТА ЦІНИ

| trans-title=Products and prices

| publisher=DP "Kvazar-IS"

| place=Kyiv

| url=http://www.kwazar-is.kiev.ua/nomen.htm

| language=uk

| date=1 October 2024

| access-date=9 March 2025

}}

{{Div col}}

• Electronic component
• Logic gate, Logic family
• List of 7400-series integrated circuits
• 4000-series integrated circuits
• List of 4000-series integrated circuits
• Linear integrated circuit
• List of linear integrated circuits
• List of LM-series integrated circuits
• Push–pull output
• Open-collector/drain output
• Three-state output
• Schmitt trigger input
• Programmable logic device
• Pin compatibility

{{Div col end}}

{{Reflist|refs=

{{cite book |title=The TTL Data Book Volume 3|publisher=Texas Instruments |date=1984 |url=https://archive.org/details/bitsavers_tidataBookVol3_25840031}}

{{cite book |title=The TTL Data Book Volume 2|publisher=Texas Instruments |date=1985 |url=https://archive.org/details/bitsavers_tidataBookVol2_45945352}}

{{cite book |title=The TTL Data Book for Design Engineers, 2nd Edition |publisher=Texas Instruments |date=1981 |url=https://archive.org/details/bitsavers_tidataBookesignEngineers2ed1981_29954976}}

{{cite book |title=AHC/AHCT, HC/HCT, and LV CMOS Logic |publisher=Texas Instruments |date=1996 |url=https://archive.org/details/bitsavers_tidataBookCTHCHCTandLVCMOSLogicDataBook_71546580}}

{{cite book |title=ABT Advanced BiCMOS Technology |publisher=Texas Instruments |date=1992 |url=https://archive.org/details/bitsavers_tidataBookiCMOSTechnologyDataBook_40217042}}

{{cite book |title=ABT Advanced BiCMOS Technology |publisher=Texas Instruments |date=1994 |url=http://www.bitsavers.org/components/ti/_dataBooks/1994_TI_ABT_ABT_Advanced_BiCMOS_Technology_Data_Book.pdf}}

{{cite book |title=Advanced CMOS Logic Data Book |publisher=Texas Instruments |date=1993 |url=https://archive.org/details/bitsavers_tidataBookLogicDataBook_55735151}}

{{cite book |title=BiCMOS Bus Interface Logic |publisher=Texas Instruments |date=1988 |url=https://archive.org/details/bitsavers_tidataBookerfaceLogicDataBook_4501982}}

{{cite book |title=Low-Voltage Logic |publisher=Texas Instruments |date=1996 |url=https://www.bitsavers.org/components/ti/_dataBooks/1996_TI_Low-Voltage_Logic_Data_Book.pdf}}

{{cite book |title=LVC and LV Low-Voltage CMOS Logic Data Book |publisher=Texas Instruments |date=1998 |url=https://archive.org/details/TexasInstrumentsLVCAndLVDataBook1998}}

{{cite web |title=CD74FCT245 BiCMOS Octal Bus Transceiver With 3-State Outputs |publisher=Texas Instruments |date=2000 |url=https://www.ti.com/lit/ds/symlink/cd74fct245.pdf}}

{{cite web |title=SN74AUC00 Quadruple 2-Input Positive-NAND Gate |url=https://www.ti.com/lit/gpn/SN74AUC00 |publisher=Texas Instruments |date=2005 |access-date=2023-03-30}}

{{cite web |title=SN74AUP1G00 Low-Power Single 2-Input Positive-NAND Gate |url=https://www.ti.com/lit/gpn/SN74AUP1G00 |publisher=Texas Instruments |date=2016 |access-date=2023-04-15}}

{{cite web |title=SN74HCS00 Quadruple 2-Input Positive-NAND Gate with Schmitt-Trigger Inputs|url=https://www.ti.com/lit/gpn/SN74HCS00 |publisher=Texas Instruments |date=2021 |access-date=2023-04-14}}

{{cite web |title=SN74AUC16245 16-Bit Bus Transceiver with 3-State Outputs |url=https://www.ti.com/lit/gpn/SN74AUC16245 |publisher=Texas Instruments |date=2002 |access-date=2023-03-30}}

{{cite web |title=SN74AVC16245 16-Bit Bus Transceiver with 3-State Outputs |url=https://www.ti.com/lit/gpn/SN74AVC16245 |publisher=Texas Instruments |date=1998 |access-date=2023-04-13}}

{{cite web |title=SN74AVCH8T245 8-Bit Dual-Supply Bus Transceiver With Configurable Level-Shifting, Voltage Translation, and 3-State Outputs |url=https://www.ti.com/lit/gpn/sn74avch8t245 |publisher=Texas Instruments |date=2016 |access-date=2023-04-30}}

{{cite web |title=SN74AXC2T245 2-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Tri-State Outputs |url=https://www.ti.com/lit/gpn/SN74AXC2T245 |publisher=Texas Instruments |date=2020 |access-date=2023-04-15}}

{{cite web |title=SN74AXCH8T245 8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation, Tri-State Outputs, and Bus-Hold Circuitry |url=https://www.ti.com/lit/gpn/SN74AXCH8T245 |publisher=Texas Instruments |date=2019 |access-date=2023-07-19}}

{{cite web |title=SN74LXCH8T245 8-bit Translating Transceiver with Configurable Level Shifting |url=https://www.ti.com/lit/gpn/SN74LXCH8T245 |publisher=Texas Instruments |date=2021 |access-date=2023-07-20}}

{{cite web |title=Robust Voltage Level Translation with the LXC Family |url=https://www.ti.com/lit/an/scea097/scea097.pdf |publisher=Texas Instruments |date=2021 |access-date=2023-07-20}}

{{cite web |title=SN54ALVTH16245, SN74ALVTH16245 2.5-V/3.3-V 16-Bit Bus Transceivers With 3-State Outputs |publisher=Texas Instruments |date=2002 |url=https://www.ti.com/lit/gpn/SN74ALVTH16245 |access-date=2023-04-30}}

{{cite web |title=SN54ABTH245, SN74ABTH245 Octal Bus Transceivers With 3-State Outputs |publisher=Texas Instruments |date=1996 |url=https://www.ti.com/lit/gpn/SN54ABTH245 |access-date=2023-06-05}}

{{cite web |title=SN54ABTR2245, SN74ABTR2245 Octal Transceivers and Line/Memory Drivers With 3-State Outputs |publisher=Texas Instruments |date=1997 |url=https://www.ti.com/lit/gpn/SN74ABTR2245 |access-date=2023-06-07}}

{{cite web |title=SN74AUCH245 Octal Bus Transceiver With 3-State Outputs |publisher=Texas Instruments |date=2003 |url=https://www.ti.com/lit/gpn/SN74AUCH245 |access-date=2023-06-07}}

{{cite web |title=SN74AUCU04 Hex Inverter |publisher=Texas Instruments |date=2003 |url=https://www.ti.com/lit/gpn/SN74AUCU04 |access-date=2023-06-07}}

{{cite book |title=CBT (5-V) and CBTLV (3.3-V) Bus Switches |publisher=Texas Instruments |date=1998 |url=https://archive.org/details/texasinstruments_scdd001b}}

{{cite book |title=Advanced Low-Voltage Technology |publisher=Texas Instruments |date=1999 |url=https://www.ti.com/lit/an/scea015/scea015.pdf}}

{{cite book |title=LVT-to-LVTH Conversion |publisher=Texas Instruments |date=1999 |url=https://www.ti.com/lit/an/scea010/scea010.pdf}}

{{cite web |title=SN54LVTZ244, SN74LVTZ244 3.3-V ABT Octal Buffers/Drivers With 3-State Outputs |publisher=Texas Instruments |date=1995 |url=https://www.ti.com/lit/gpn/SN74LVTZ244 |access-date=2023-07-21}}

{{cite web |title=SN74LVCZ245A Octal bus transceiver with 3-state outputs |publisher=Texas Instruments |date=2003 |url=https://www.ti.com/lit/gpn/SN74LVCZ245A |access-date=2023-07-21}}

{{cite web |title=GTLP Signal Level Background Information |publisher=Texas Instruments |date=2000 |url=https://www.ti.com/pdfs/logic/gtlpbackgrounder.pdf |access-date=2023-07-17}}

{{cite book |title=GTL/GTLP Logic High-Performance Backplane Drivers Data Book |publisher=Texas Instruments |date=2001 |url=https://www.ti.com/lit/pdf/sced004}}

{{cite web |title=History & Heritage |publisher=Fairchild |url=https://www.fairchildsemi.com/about/history-heritage/ |archive-url=https://web.archive.org/web/20150908100532/https://www.fairchildsemi.com/about/history-heritage/ |archive-date=2015-09-08}}

{{cite book |title=FAST - Fairchild Advanced Schottky TTL |publisher=Fairchild |date=1980 |url=https://archive.org/details/bitsavers_fairchilddldFASTDataBook_10052460}}

{{cite book |title=Fairchild Advanced CMOS Technology Logic Data Book |publisher=Fairchild |date=1985 |url=https://archive.org/details/bitsavers_fairchilddldFACTLogicDataBook_6143977}}

{{cite web |title=74VHC00 Quad 2-Input NAND Gate |publisher=Fairchild |date=2005 |url=https://pdf1.alldatasheet.com/datasheet-pdf/view/50632/FAIRCHILD/74VHC00.html |access-date=2023-03-21}}

{{cite web |title=74ACQ245 • 74ACTQ245 Quiet Series Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs |publisher=Fairchild |date=1999 |url=https://pdf.datasheetcatalog.com/datasheet/fairchild/74ACQ245.pdf |access-date=2023-03-31}}

{{cite web |title=74ACTQ00 Quiet Series Quad 2-Input NAND Gate |publisher=Fairchild |date=1999 |url=https://z3d9b7u8.stackpathcdn.com/pdf-down/7/4/A/74ACTQ00_FairchildSemiconductor.pdf |archive-url=https://web.archive.org/web/20230331135831/https://z3d9b7u8.stackpathcdn.com/pdf-down/7/4/A/74ACTQ00_FairchildSemiconductor.pdf |archive-date=2023-03-31}}

{{cite web |title=74VCX00 - Low Voltage Quad 2-Input NAND Gate with 3.6V Tolerant Inputs and Outputs |publisher=Fairchild |date=2013 |url=https://www.onsemi.com/download/data-sheet/pdf/74vcx00-d.pdf |access-date=2023-04-19}}

{{cite web |title=74LCXH16244 - Low Voltage 16-Bit Buffer/Line Driver with Bushold |date=2005 |publisher=Fairchild |url=https://www.onsemi.com/download/data-sheet/pdf/74lcxh16244-d.pdf |access-date=2023-05-03}}

{{cite web |title=74LCXR2245 Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports |date=2008 |publisher=Fairchild |url=https://www.onsemi.com/download/data-sheet/pdf/74lcxr2245-d.pdf |access-date=2023-05-03}}

{{cite web |title=74LCXZ16245 Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs and Outputs |publisher=Fairchild |url=https://www.onsemi.com/download/data-sheet/pdf/74lcxz16245-d.pdf |access-date=2023-07-21}}

{{cite book |title=CMOS Integrated Circuits |publisher=National Semiconductor |date=1975 |url=https://archive.org/details/bitsavers_nationaldaCMOSIntegratedCircuits_16413029}}

{{cite book |title=MM54HC/74HC High Speed microCMOS Logic Family Databook |publisher=National Semiconductor |date=1983 |url=https://archive.org/details/bitsavers_nationalda74HCDatabook_36362852}}

{{cite book |title=Low Voltage Databook |publisher=National Semiconductor |date=1992 |url=http://bitsavers.informatik.uni-stuttgart.de/components/national/_dataBooks/1992_400038_National_Low_Voltage_Databook.pdf}}

{{cite book |title=CROSSVOLT Low Voltage Logic Series |publisher=National Semiconductor |date=1994 |url=https://archive.org/details/bitsavers_nationaldaCROSSVOLTLowVoltageLogicSeriesDatabook_18426235}}

{{cite web |title=74VHC00 * 74VHCT00 Quad 2-Input NAND Gate |publisher=National Semiconductor |date=1995 |url=https://pdf.datasheetcatalog.com/datasheet/nationalsemiconductor/DS011504.PDF |access-date=2023-03-21}}

{{cite book |title=C²MOS Logic TC74AC/ACT Series TC74HC/HCT Series |publisher=Toshiba |date=1990 |url=https://archive.org/details/bitsavers_toshibadatMOSLogic_71343239}}

{{cite web |title=74ABT00 |publisher=Nexperia |date=2020 |url=https://assets.nexperia.com/documents/data-sheet/74ABT00.pdf |access-date=2023-03-22}}

{{cite web |title=74ALVC00 |publisher=Nexperia |date=2021 |url=https://assets.nexperia.com/documents/data-sheet/74ALVC00.pdf |access-date=2023-03-29}}

{{cite web |title=74AHCV245A |publisher=Nexperia |date=2016 |url=https://assets.nexperia.com/documents/data-sheet/74AHCV245A.pdf |access-date=2023-06-03}}

{{cite web |title=74LVT00 |publisher=Philips |date=1996 |url=https://pdf1.alldatasheet.com/datasheet-pdf/view/15813/PHILIPS/74LVT00.html |access-date=2023-03-22}}

{{cite book |title=ABT MULTIBYTE Advanced BiCMOS Bus Interface Logic |publisher=Signetics |date=1991 |url=http://bitsavers.org/components/signetics/_dataBooks/1991_Signetics_IC23_ABT_MULTIBYTE_Advanced_BiCMOS_Bus_Interface_Logic.pdf}}

{{cite web |title=74LCX00 |publisher=STMicroelectronics |date=2012 |url=https://www.st.com/resource/en/datasheet/74lcx00.pdf |access-date=2023-03-24}}

{{cite web |title=74VHCU04 |publisher=STMicroelectronics |date=2004 |url=https://www.st.com/resource/en/datasheet/74vhcu04.pdf |access-date=2023-04-21}}

{{cite web |title=74LCXU04 |publisher=STMicroelectronics |date=2006 |url=https://www.mouser.com/datasheet/2/389/CD00002106-96321.pdf |access-date=2023-04-21}}

{{cite web |title=74LVXU04 |publisher=STMicroelectronics |date=2004 |url=https://www.st.com/resource/en/datasheet/74lvxu04.pdf |access-date=2023-04-21}}

{{cite web |title=74AHCU04 |publisher=Diodes Inc. |date=2013 |url=https://www.diodes.com/assets/Datasheets/74AHCU04.pdf |access-date=2023-05-02}}

{{cite web |title=Logic Master Table LVCE Family |date=18 August 2022 |publisher=Diodes Inc. |url=https://www.diodes.com/products/logic-and-voltage-translation/logic/logic-master-table/#collection-9700=~(Family~(~'LVCE)) |access-date=2023-05-02}}

{{cite book |title=High Performance CMOS Data Book |publisher=IDT |date=1986 |url=https://archive.org/details/bitsavers_idtdataBoomanceCMOSDataBook_52220630}}

{{cite book |title=1990-91 Logic Data Book |publisher=IDT |date=1990 |url=http://www.bitsavers.org/components/idt/_dataBooks/1990_IDT_Logic_Data_Book.pdf}}

{{cite book |title=High Performance Logic Data Book |publisher=IDT |date=1995 |url=https://archive.org/details/bitsavers_idtdataBoomanceLogicDataBook_51362967}}

{{cite web |title=GTE G74SC245 G74SC545 |publisher=GTE Microcircuits |date=1981 |url=https://www.datasheetarchive.com/?q=g74sc245p |access-date=2024-04-27}}

{{cite web |title=Supertex inc. HCT/SC245 |publisher=Supertex inc. |url=https://www.datasheetarchive.com/?q=74sc245p |access-date=2024-04-27}}

{{cite book |title=LPT/FCT CMOS Logic From Harris |publisher=Harris |date=1997 |url=https://archive.org/details/bitsavers_harrisdataCTLogic_25505286}}

{{cite book |title=Low Voltage C²MOS Logic IC |publisher=Toshiba |date=1994 |url=http://www.bitsavers.org/components/toshiba/_dataBook/1994_Toshiba_Low_Voltage_CMOS_Logic.pdf}}

{{cite book |title=High Performance CMOS Logic Data Book |publisher=Samsung |date=1988 |url=https://archive.org/details/bitsavers_samsungdatghPerformanceCMOSLogicDataBook_50512171}}

{{cite web |title=Press Room |url=http://potatosemi.com/2007/press.html |archive-url=https://web.archive.org/web/20080201041441if_/http://potatosemi.com/2007/press.html |archive-date=2008-02-01 |publisher=Potato Semiconductor}}

{{cite web |title=PO54G00A, PO74G00A |publisher=Potato Semiconductor |url=http://www.potatosemi.com/potatosemiweb/datasheet/PO74G00A.pdf |access-date=2023-04-15}}

{{cite web |title=Logic Guide |url=https://www.ti.com/lit/sg/sdyu001ab/sdyu001ab.pdf |publisher=TI}}

{{cite book |title=Handbuch TTL- und CMOS-Schaltkreise |trans-title=Handbook of TTL and CMOS circuits |language=de |author=Eberhard Kühn |date=1986 |publisher=Verlag Technik |place=Berlin |oclc=876464464}}

}}

;Books

• 50 Circuits Using 7400 Series IC's; 1st Ed; R.N. Soar; Bernard Babani Publishing; 76 pages; 1979; {{ISBN|0900162775}}. [https://worldradiohistory.com/UK/Bernards-And-Babani/Bernards/Babani-58-50-Circuits-Using-7400-ICs.pdf (archive)]
• TTL Cookbook; 1st Ed; Don Lancaster; Sams Publishing; 412 pages; 1974; {{ISBN|978-0672210358}}. [https://web.archive.org/web/20190311005416/https://www.tinaja.com/ebooks/TTLCB1.pdf (archive)]
• Designing with TTL Integrated Circuits; 1st Ed; Robert Morris, John Miller; Texas Instruments and McGraw-Hill; 322 pages; 1971; {{ISBN|978-0070637450}}. [https://archive.org/details/bitsavers_tiTexasInsSeriesMorrisDesigningWithTTLIntegratedCi_11927910 (archive)]

;App Notes

• [https://www.ti.com/lit/SZZA036 Understanding and Interpreting Standard-Logic Data Sheets]; Stephen Nolan, Jose Soltero, Shreyas Rao; Texas Instruments; 60 pages; 2016.
• [https://www.onsemi.com/pub/Collateral/AN-319.pdf Comparison of 74HC / 74S / 74LS / 74ALS Logic]; Fairchild; 6 pages, 1983.
• [https://www.onsemi.com/pub/Collateral/AN-314.pdf Interfacing to 74HC Logic]; Fairchild; 10 pages; 1998.
• [https://www.ti.com/lit/ml/scla013d/scla013d.pdf 74AHC / 74AHCT Designer's Guide]; TI; 53pages; 1998. Compares 74HC / 74AHC / 74AC (CMOS I/O) and 74HCT / 74AHCT / 74ACT (TTL I/O).

;Fairchild Semiconductor / ON Semiconductor

• Historical Data Books: [https://archive.org/details/bitsavers_fairchilddldTTLDataBook_39509923 TTL (1978, 752 pages)], [https://archive.org/details/bitsavers_fairchilddldFASTDataBook_20099339 FAST (1981, 349 pages)]
• [https://web.archive.org/web/20170629224843/https://www.fairchildsemi.com/collateral/Logic-Selection-Guide.pdf Logic Selection Guide (2008, 12 pages)]

;Nexperia / NXP Semiconductor

• [https://assets.nexperia.com/documents/selection-guide/Nexperia_Selection_guide_2020.pdf Logic Selection Guide (2020, 234 pages)]
• [https://assets.nexperia.com/documents/brochure/Nexperia_LOGIC_Handbook_201029.pdf Logic Application Handbook Design Engineer's Guide' (2021, 157 pages)]
• [https://assets.nexperia.com/documents/brochure/Nexperia_document_guide_Logic_translators.pdf Logic Translators' (2021, 62 pages)]

;Texas Instruments / National Semiconductor

• Historical Catalog: [https://archive.org/details/bitsavers_tidataBookts196768_16942634 (1967, 375 pages)]
• Historical Databooks: [https://archive.org/details/bitsavers_tidataBookVol1_11973959 TTL Vol1 (1984, 339 pages)], [https://archive.org/details/bitsavers_tidataBookVol2_45945352 TTL Vol2 (1985, 1402 pages)], [https://archive.org/details/bitsavers_tidataBookVol3_25840031 TTL Vol3 (1984, 793 pages)], [https://archive.org/details/bitsavers_tidataBookVol4_14886851 TTL Vol4 (1986, 445 pages)]
• [https://archive.org/details/TexasInstruments_SCYD013B Digital Logic Pocket Data Book (2007, 794 pages)], [https://web.archive.org/web/20110604202009/https://focus.ti.com/lit/ml/scyb004b/scyb004b.pdf Logic Reference Guide (2004, 8 pages)], [https://web.archive.org/web/20160118225253/https://my.ece.msstate.edu/faculty/reese/EE4743/data_sheets/sdyu001k.pdf Logic Selection Guide (1998, 215 pages)]
• [https://www.ti.com/lit/sg/scyt129g/scyt129g.pdf Little Logic Guide (2018, 25 pages)], [https://web.archive.org/web/20160429220820/https://focus.ti.com/pdfs/logic/littlelogicsg1.pdf Little Logic Selection Guide (2004, 24 pages)]

;Toshiba

• [https://web.archive.org/web/20170919062250/https://toshiba.semicon-storage.com/info/docget.jsp?did=7426 General-Purpose Logic ICs (2012, 55 pages)]

{{Commons category}}

• [http://www.nutsvolts.com/magazine/article/understanding_digital_logic_ics_part_2 Understanding 7400-series digital logic ICs] - Nuts and Volts magazine
• [https://electronicsclub.info/74series.htm Thorough list of 7400-series ICs] - Electronics Club

{{Authority control}}

Category:Integrated circuits

Category:Digital electronics

Category:1964 introductions