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SN54ALS21AJ-SNJ54ALS21AJ
Dual 4-Input Positive-AND Gates
descriptionThese 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)
logic symbol† logic diagram (positive logic)1A1B 41C1D2A 102B2C2D†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.
GND
SN54ALS21A, SN54AS21... FK PACKAGE
(TOP VIEW)1ANC2A2D
NC − No internal connection
GND
