View 74lvc163 2 datasheet:

INTEGRATED CIRCUITS 74LVC163 Presettable synchronous 4-bit binary counter; synchronous 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; 74LVC163 synchronous reset The 74LVC163 is a synchronous presettable binary counter which FEATURES features an internal look–head carry and can be used for high-speed • Wide supply voltage range of 1.2 V to 3.6 V counting. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-going edge of the clock (CP). • In accordance with JEDEC standard no. 8–1A The outputs (Q0 to Q3) of the counters may be preset to a HIGH or • Inputs accept voltages