Datasheet Summary
CD54AC161, CD74AC161 4-BIT SYNCHRONOUS BINARY COUNTERS
SCHS239C
- SEPTEMBER 1998
- REVISED MARCH 2003
D Internal Look-Ahead for Fast Counting D Carry Output for n-Bit Cascading D Synchronous Counting D Synchronously Programmable D SCR-Latchup-Resistant CMOS Process and
Circuit Design
D Exceeds 2-kV ESD Protection per
MIL-STD-883, Method 3015 description/ordering information
CD54AC161 . . . F PACKAGE CD74AC161 . . . E OR M PACKAGE
(TOP VIEW)
CLR 1 CLK 2
A3 B4 C5 D6 ENP 7 GND 8
16 VCC 15 RCO
14 QA 13 QB 12 QC 11 QD 10 ENT
9 LOAD
The ’AC161 devices are 4-bit binary counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed...