54AC161 - National Semiconductor

54AC161 Synchronous Presettable Binary Counter

The ’AC/’ACT161 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 ’AC/ ’ACT161 has an asynchronous Master Reset input that overrides all other in.

Features

n ICC reduced by 50% Logic Symbols Pin Names CEP CET CP MR P0
  –P3 PE Q0
  –Q3 TC DS100274-1 Description Count Enable Parallel Input Count Enable Trickle Input Clock Pulse Input Asynchronous Master Reset Input Parallel Data Inputs Parallel Enable Inputs Flip-Flop Outputs Terminal Count Output IEEE/IEC DS100274-2 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT™ is a trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100274 www.national.com Connection Diagrams Pin Assignment for DIP and Flatpak The Terminal Count .