BUY DM74ALS161BN https://www.utsource.net/itm/p/111834.html
Synchronous Four-Bit Binary Counter with Asynchronous Clear
The DM74ALS161BN is a synchronous 4-bit binary counter with an asynchronous reset. It is a 16-pin dual in-line package (DIP) device manufactured by National Semiconductor (NS) and Fairchild Semiconductor. Description: The DM74ALS161BN is a 4-bit synchronous binary counter with an asynchronous reset. It has four parallel data inputs (A, B, C, and D) and four parallel data outputs (QA, QB, QC, and QD). The counter is advanced one count on the positive edge of the clock (CP) input. The counter can be reset to zero by a low level on the reset (R) input. Features: Synchronous 4-bit binary counter Asynchronous reset 16-pin DIP package Low power consumption High speed operation High noise immunity Applications: Frequency division Pulse width modulation Digital timing circuits Digital counters Frequency measurement (For reference only)