These devices contain four independent 2-input positive-NAND gates. They perform the Boolean functions Y = A • B or Y = A + B in positive logic.
The SN54ALS00A and SN54AS00 are characterized for operation over the full military temperature range of −55°C to 125°C. The SN74ALS00A and SN74AS00 are characterized for operation from 0°C to 70°C
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