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#Nand gate ic 7400 datasheet series#

Input column – a blank cell means a normal input for the logic family type.

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.

For example, 74x00 in "LS" logic family would be "74LS00".

Part number column – the "x" is a place holder for the logic subfamily name.

Older discontinued parts may be available from a limited number of sellers as new old stock (NOS), though some are much harder to find. IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer manufactured. The lower part numbers were established in the 1960s and 1970s, then higher part numbers were added incrementally over decades. Parts in this section have a pin count of 14 pins or more.

SN74LS51 = 2-2 AOI gate and 3-3 AOI gate.

SN5450 = dual 2-2 AOI gate, one is expandable (SN54 is military version of SN74).

Schmitt-trigger inputs / three-state outputs ConfigurationĪND-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. Normal inputs / open-collector outputs Configuration Schmitt-trigger inputs / push–pull outputs Configuration Normal inputs / push–pull outputs Configuration This section only includes combinational logic gates.įor part numbers in this section, "x" is the 7400-series logic family, such as LS, ALS, HCT, AHCT, HC, AHC, LVC. Since there are numerous 7400-series parts, the following groups related parts to make it easier to pick a useful part number. See also: Logic gate, Logic level, and Logic family There are a few numeric suffixes that have multiple conflicting assignments, such as the 74453. For more details, refer primarily to the Texas Instruments documentation mentioned in the References section.įor CMOS (AC, HC, etc.) subfamilies, read "open drain" for " open collector" in the table below. 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.

#Nand gate ic 7400 datasheet series#

In a few instances, such as the 747, the same suffix in different families do not have completely equivalent logic functions.Īnother 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. are usually cited in the descriptions from other companies when describing their own unique designations. The National Semiconductor trademarks of the words FAST and FACT 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.

Not all functions are available in all families. Some CMOS parts such as 74HCT74 for high-speed CMOS with TTL-compatible input thresholds are functionally similar to the TTL part. Older TTL parts made by manufacturers such as Signetics, Motorola, Mullard and Siemens may have different numeric prefix and numbering series entirely, such as in the European FJ family FJH101 is an 8-input NAND gate like a 7430.Ī 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. See List of 4000-series integrated circuits.Ĭonversely, 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. 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.). Surface-mount parts with a single gate (often in a 5-pin or 6-pin package) are prefixed with 741G instead of 74. Most recent 7400-series parts are fabricated in CMOS or BiCMOS technology rather than TTL. Ī short-lived 64 prefix on Texas Instruments parts indicated an industrial temperature range this prefix had been dropped from the TI literature by 1973. These parts are prefixed with 54 instead of 74 in the part number. Some TTL logic parts were made with an extended military-specification temperature range.