SDAS197 - D2661, APRIL 1984 - REVISED MAY 1986
These devices contain two independent 4-input NAND buffer gates.
They perform the Boolean functions
or
in positive
logic.
The SN54ALS40A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS40A is characterized for operation from 0°C to 70°C.