1 Features

• Internal look-ahead for fast counting

• Carry output for n-bit cascading

• Synchronous counting

• Synchronously programmable

• SCR-latchup-resistant CMOS process and circuit

design

• Exceeds 2kV ESD protection per MIL-STD-883,

method 3015

2 Description

The ’AC161 devices are 4-bit binary counters.

These synchronous, presettable counters feature an

internal carry look-ahead for application in high-speed

counting.