74LS161 BCD Decade & 4-Bit Binary Counter - (AD18046)

Description:

The LS161 is a high-speed 4-bit synchronous counter. It is edge-triggered, has synchronous preset, and is placed in cascade type blocks for counting, memory addressing, frequency division, and other applications. The LS161 is a BCD decade counter module, has master reset (clear), override inputs, and is independent of the clock and other control inputs.

Datasheet