These devices contain four independent 2-input positive-NOR gates.
They perform the Boolean functions or Y = A\ \x95 B\ in positive logic.
The SN54ALS02A and SN54AS02 are characterized for operation over
the full military temperature range of -55°C to 125°C. The
SN74ALS02A and SN74AS02 are characterized for operation from 0°C
to 70°C.