View 74lvc161 2 datasheet:

INTEGRATED CIRCUITS 74LVC161 Presettable synchronous 4-bit binary counter; asynchronous reset Product specification 1998 May 20 Supersedes data of 1996 Aug 23 IC24 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Presettable synchronous 4-bit binary counter; 74LVC161 asynchronous reset The 74LVC161 is a synchronous presettable binary counter which FEATURES features an internal look–head carry and can be used for • Wide supply voltage range of 1.2 V to 3.6 V high–speed counting. Synchronous operation is provided by having all flip–flops clocked simultaneously on the positive–going edge of • In accordance with JEDEC standard no. 8–1A the clock (CP). The outputs (Q0 to Q3) of the counters may be • Inputs accept voltages up to 5.5 V prese