onsemi MC74ACT163
The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high−speed synchronous modulo−16 binary counters. They are synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The MC74AC161/74ACT161 has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW.FEATURES
● Synchronous Counting and Loading● High−Speed Synchronous Expansion
● Typical Count Rate of 125 MHz
● Outputs Source/Sink 24 mA
● ′ACT161 and ′ACT163 Have TTL Compatible Inputs
● These are Pb−Free Devices VCC TC Q0 Q1 Q2 Q3 CET PE 16 15 14 13 12 11 10 9