Commercial 5V 4-Bit BIDIRECTIONAL Binary Counter IC, TTL/H/L, 20-Pin DIP
4-Bit Bidirectional Binary Counter, TTL, 20-Pin, Military
Binary Counter, TTL/H/L Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, CDIP20, HERMETIC SEALED, CERDIP-20
