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SN54ALS21A

Texas Instruments
Part Number SN54ALS21A
Manufacturer Texas Instruments
Description Dual 4-Input Positive-AND Gate
Published Dec 10, 2020
Detailed Description SN54ALS21A, SN54AS21, SN74ALS21A, SN74AS21 DUAL 4ĆINPUT POSITIVEĆAND GATES • Package Options Include Plastic Small-Outl...
Datasheet PDF File SN54ALS21A PDF File

SN54ALS21A
SN54ALS21A

Overview
SN54ALS21A, SN54AS21, SN74ALS21A, SN74AS21 DUAL 4ĆINPUT POSITIVEĆAND GATES • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description These devices contain two independent 4-input positive-AND gates.
They perform the Boolean functions Y = A • B • C • D or Y = A + B + C + D in positive logic.
The SN54ALS21A and SN54AS21 are characterized for operation over the full military temperature range of − 55°C to 125°C.
The SN74ALS21A and SN74AS21 are characterized for operation from 0°C to 70°C.
FUNCTION TABLE (each gate) INPUTS OUTPUT A B C D Y H H H H H L X X X L X L X X L X X L X L X X X L L logic symbol† 1 1A & 2 1B 4 1C 5 1D 9 2A 10 2B 12 2C 13 2D 6 1Y 8 2Y † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
SDAS085B − APRIL 1982 − REVISED DECEMBER 1994 SN54ALS21A...


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