N7402A

N7402A: Quadruple 2-Input Positive-NOR Gates, belonging to the foundational standard 5V TTL logic generation. It houses four completely separate two-input NOR logic gates binned with optimized propagation timing delays to drive core Boolean routing loops inside vintage personal computing chassis and laboratory test equipment, housed in a standard 14-pin through-hole plastic DIP package layout. Manufactured by Signetics.