These devices contain six independent 2-input NAND drivers. They perform the Boolean functions or Y = A\ + B\ in positive logic.
The SN54ALS804A and SN54AS804B are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS804A and SN74AS804B are characterized for operation from 0°C to 70°C.
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