The following is a list of 7400-series digital logic integrated circuits. In the mid-1960s, the original
7400-series integrated circuit
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of tiny ...
s were introduced by
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
with the prefix "SN" to create the name SN74xx. Due to the popularity of these parts, other manufacturers released pin-to-pin compatible
logic
Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
devices and kept the 7400 sequence number as an aid to identification of compatible parts. However, other manufacturers use different prefixes and suffixes on their part numbers.
Overview
Some TTL logic parts were made with an extended military-specification temperature range. These parts are prefixed with 54 instead of 74 in the part number.
A short-lived 64 prefix on Texas Instruments parts indicated an industrial temperature range; this prefix had been dropped from the TI literature by 1973. Most recent 7400-series parts are fabricated in
CMOS
Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss", ) is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFE ...
or
BiCMOS
Bipolar CMOS (BiCMOS) is a semiconductor technology that integrates two semiconductor technologies, those of the bipolar junction transistor and the CMOS (complementary metal-oxide-semiconductor) logic gate, into a single integrated circuit. In ...
technology rather than TTL. Surface-mount parts with a single gate (often in a 5-pin or 6-pin package) are prefixed with 741G instead of 74.
Some manufacturers released some
4000-series equivalent CMOS circuits with a 74 prefix, for example, the 74HC4066 was a replacement for the 4066 with slightly different electrical characteristics (different power-supply voltage ratings, higher frequency capabilities, lower "on" resistances in analog switches, etc.). See
List of 4000-series integrated circuits.
Conversely, the 4000-series has "borrowed" from the 7400 series such as the CD40193 and CD40161 being pin-for-pin ''functional'' replacements for 74C193 and 74C161.
Older TTL parts made by manufacturers such as
Signetics
Signetics Corporation was an American electronics manufacturer specifically established to make integrated circuits. Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 time ...
,
Motorola
Motorola, Inc. () was an American Multinational corporation, multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent p ...
,
Mullard
Mullard Limited was a British manufacturer of electronic components. The Mullard Radio Valve Co. Ltd. of Southfields, London, was founded in 1920 by Captain Stanley R. Mullard, who had previously designed thermionic valves for the Admir ...
and
Siemens
Siemens AG ( ) is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe headquartered in Munich with branch offices abroad.
The principal divisions of the corporation are ''Industry'', '' ...
may have different numeric prefix and numbering series entirely, such as in the European FJ family FJH101 is an 8-input
NAND gate
In digital electronics, a NAND gate (NOT-AND) is a logic gate which produces an output which is false only if all its inputs are true; thus its output is complement to that of an AND gate. A LOW (0) output results only if all the inputs to the ...
like a 7430.
A few alphabetic characters to designate a specific
logic subfamily may immediately follow the 74 or 54 in the part number, e.g., 74LS74 for low-power
Schottky. Some CMOS parts such as 74HCT74 for high-speed
CMOS
Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss", ) is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFE ...
with TTL-compatible input thresholds are functionally similar to the TTL part. Not all functions are available in all families.
The generic descriptive feature of these alphabetic characters was diluted by various companies participating in the market at its peak and are not always consistent especially with more recent offerings. The National Semiconductor trademarks of the words FAST and FACT
are usually cited in the descriptions from other companies when describing their own unique designations.
In a few instances, such as the 7478 and 74107, the same suffix in different families do not have completely equivalent logic functions.
Another extension to the series is the 7416xxx variant, representing mostly the 16-bit-wide counterpart of otherwise 8-bit-wide "base" chips with the same three ending digits. Thus e.g. a "7416373" would be the 16-bit-wide equivalent of a "74373". Some 7416xxx parts, however, do not have a direct counterpart from the standard 74xxx range but deliver new functionality instead, which needs making use of the 7416xxx series' higher pin count. For more details, refer primarily to the Texas Instruments documentation mentioned in the
References
Reference is a relationship between objects in which one object designates, or acts as a means by which to connect to or link to, another object. The first object in this relation is said to ''refer to'' the second object. It is called a ''name'' ...
section.
For CMOS (AC, HC, etc.) subfamilies, read "open drain" for "
open collector
An open collector is a common type of output found on many integrated circuits (IC), which behaves like a switch that is either connected to ground or disconnected. Instead of outputting a signal of a specific voltage or current, the output sig ...
" in the table below.
There are a few numeric suffixes that have multiple conflicting assignments, such as the 74453.
Logic gates
![Logique74ls51](https://upload.wikimedia.org/wikipedia/commons/0/0b/Logique74ls51.svg)
Since there are numerous 7400-series parts, the following groups related parts to make it easier to pick a useful part number. This section only includes combinational logic gates.
For part numbers in this section, "x" is the
7400-series logic family, such as LS, ALS, HCT, AHCT, HC, AHC, LVC, ...
;Normal inputs / push–pull outputs
:
:
;Schmitt-trigger inputs / push–pull outputs
:
:
;Normal inputs / open-collector outputs
:
:
;Schmitt-trigger inputs / three-state outputs
:
;AND-OR-invert (AOI) logic gates
: NOTE: in past decades, a number of
AND-OR-invert (AOI) parts were available in 7400 TTL families, but currently most are obsolete.
* SN5450 = dual 2-2 AOI gate, one is expandable (SN54 is military version of SN74)
* SN74LS51 = 2-2 AOI gate and 3-3 AOI gate
* SN54LS54 = single 2-3-3-2 AOI gate
Larger footprints
Parts in this section have a pin count of 14 pins or more. The lower part numbers were established in the 1960s and 1970s, then higher part numbers were added incrementally over decades. IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer manufactured. Older discontinued parts may be available from a limited number of sellers as
new old stock (NOS), though some are much harder to find.
For the following table:
* Part number column the "x" is a place holder for the
logic subfamily name. For example, 74x00 in "LS" logic family would be "74LS00".
* Description column the terms Schmitt trigger, open-collector/open-drain, three-state were moved to the input and output columns to make it easier to sort by those features.
* Input column a blank cell means a normal input for the logic family type.
* Output column a blank cell means a "totem pole" output, also known as a
push–pull output
A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. This kind of amplifier can enhance both the load capacity and switching s ...
, with the ability to drive ten standard inputs of the same logic subfamily (
fan-out
In digital electronics, the fan-out is the number of gate inputs driven by the output of another single logic gate.
In most designs, logic gates are connected to form more complex circuits. While no logic gate input can be fed by more than one ...
N
O = 10). Outputs with higher output currents are often called drivers or buffers.
* Pins column number of pins for the
dual in-line package
In microelectronics, a dual in-line package (DIP or DIL), is an electronic component package with a rectangular housing and two parallel rows of electrical connecting pins. The package may be through-hole mounted to a printed circuit board (P ...
(DIP) version; a number in
parentheses
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'r ...
(round brackets) indicates that there is no known dual in-line package version of this IC.
Smaller footprints
As board designs have migrated away from large amounts of logic chips, so has the need for many of the same gate in one package. Since about 1996, there has been an ongoing trend towards one / two / three logic gates per chip. Now logic can be placed where it is physically needed on a board, instead of running long signal traces to a full-size logic chip that has many of the same gate.
All chips in the following sections are available 5- to 10-pin
surface-mount packages. The right digits, after the 1G/2G/3G, typically has the same functional features as older legacy chips, except for the multifunctional chips and 4-digit chip numbers, which are unique to these newer families. The "x" in the part number is a place holder for the logic family name. For example, 74x1G14 in "LVC" logic family would be "74LVC1G14". The previously stated prefixes of "SN-" and "MC-" are used to denote manufacturers, Texas Instruments and ON Semiconductor respectively.
[2018 Little Logic Guide; Texas Instruments](_blank)
[74AUP Logic Guide; NXP](_blank)
[74LVC Logic Guide; NXP](_blank)
Some of the manufacturers that make these smaller IC chips are:
Diodes Incorporated
Diodes Incorporated is a global manufacturer and supplier of application specific standard products within the discrete, logic, analog, and mixed-signal semiconductor markets. Diodes serves the consumer electronics, computing, communications, in ...
,
Nexperia
Nexperia is a semiconductor manufacturer headquartered in Nijmegen, the Netherlands.It is a subsidiary of the partially state-owned Chinese company Wingtech Technology. It has front-end factories in Hamburg, Germany and Greater Manchester, Eng ...
(
NXP Semiconductors
NXP Semiconductors N.V. (NXP) is a Dutch semiconductor designer and manufacturer with headquarters in Eindhoven, Netherlands. The company employs approximately 31,000 people in more than 30 countries. NXP reported revenue of $11.06 billion in 2 ...
),
ON Semiconductor
onsemi (stylized in lowercase; legally ON Semiconductor Corporation; formerly ON Semiconductor until August 5, 2021) is an American semiconductor supplier company, based in Phoenix, Arizona and ranked #483 on the 2022 ''Fortune'' 500 based on it ...
(
Fairchild Semiconductor
Fairchild Semiconductor International, Inc. was an American semiconductor company based in San Jose, California. Founded in 1957 as a division of Fairchild Camera and Instrument, it became a pioneer in the manufacturing of transistors and of int ...
),
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
(
National Semiconductor
National Semiconductor was an American semiconductor manufacturer which specialized in analog devices and subsystems, formerly with headquarters in Santa Clara, California. The company produced power management integrated circuits, display drive ...
),
Toshiba
, commonly known as Toshiba and stylized as TOSHIBA, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. Its diversified products and services include power, industrial and social infrastructure system ...
.
The
logic families
In computer engineering, a logic family is one of two related concepts:
* A logic family of monolithic digital integrated circuit devices is a group of electronic logic gates constructed using one of several different designs, usually with compati ...
available in small footprints are: AHC, AHCT, AUC, AUP, AXP, HC, HCT, LVC, VHC, NC7S, NC7ST, NC7SU, NC7SV. The LVC family is very popular in small footprints because it supports the most common logic voltages of 1.8 V, 3.3 V, 5 V, its inputs are 5 V tolerant when the device is powered at a lower voltage, and an output drive of 24 mA. Gates that are commonly available across most small footprint families are 00, 02, 04, 08, 14, 32, 86, 125, 126.
One-gate chips
All chips in this section have one gate, noted by the "1G" in the part numbers.
Two-gate chips
All chips in this section have two gates, noted by the "2G" in the part numbers.
Three-gate chips
All chips in this section have three gates, noted by the "3G" in the part numbers.
Voltage translation
All chips in this section have two power-supply pins to translate unidirectional logic signals between two different logic voltages. The logic families that support dual-supply voltage translation are AVC, AVCH, AXC, AXCH, AXP, LVC, where the "H" in AVCH and AXCH means "bus hold" feature.
Chips in the above table support the following voltage ranges on either power supply pin:
* AXC = 0.65 to 3.6 V. Only available from Texas Instruments.
* AXP = 0.9 to 5.5 V. Only available from Nexperia.
* LVC = 1.65 to 5.5 V. Available from Diodes Inc, Nexperia, Texas Instruments.
See also
*
4000-series integrated circuits
*
List of 4000-series integrated circuits
*
Push–pull output
A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load. This kind of amplifier can enhance both the load capacity and switching s ...
,
Open-collector output,
Three-state output
*
Schmitt trigger input
*
Logic gate
A logic gate is an idealized or physical device implementing a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output. Depending on the context, the term may refer to an ideal logic gate, ...
,
Logic family
In computer engineering, a logic family is one of two related concepts:
* A logic family of monolithic digital integrated circuit devices is a group of electronic logic gates constructed using one of several different designs, usually with compati ...
*
Programmable logic device
A programmable logic device (PLD) is an electronic component used to build reconfigurable digital circuits. Unlike digital logic constructed using discrete logic gates with fixed functions, a PLD has an undefined function at the time of manuf ...
*
Pin compatibility
In electronics, pin-compatible devices are electronic components, generally integrated circuits or expansion cards, sharing a common footprint and with the same functions assigned or usable on the same pins. Pin compatibility is a property desi ...
References
Further reading
* Digital Integrated Circuits,
National Semiconductor Corporation, January 1974
* Logic/Memories/Interface/Analog/Microprocessor/Military Data Manual,
Signetics Corporation
Signetics Corporation was an American electronics manufacturer specifically established to make integrated circuits. Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 tim ...
, 1976
* The Bipolar Microcomputer Components Data Book for Design Engineers, Second Edition,
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
, 1979
* The TTL Data Book for Design Engineers, Second Edition,
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
, 1976
* Bipolar LSI 1982 Databook,
Monolithic Memories Incorporated, September 1981
* Schottky TTL Data, DL121R1 Series D Third Printing,
Motorola
Motorola, Inc. () was an American Multinational corporation, multinational telecommunications company based in Schaumburg, Illinois, United States. After having lost $4.3 billion from 2007 to 2009, the company split into two independent p ...
, 1983
* High-Speed CMOS Logic Data Book,
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
, 1984
Logic: Overview Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
Incorporated
ALVC Advanced Low-Voltage CMOS Including SSTL, HSTL, And ALB (Rev. B) Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globall ...
, 2002
* IC Master, 1976
* Schottky and Low-Power Schottky Data Book,
Advanced Micro Devices
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets. While it initially manufact ...
, July 1978
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