General Description

These synchronous presettable counters feature an internal carry look ahead for cascading in high speed counting applications. The DM74ALS169B is a four-bit binary up/down counter.

Features

■ Switching specifications at 50 pF

■ Switching specifications guaranteed over full

temperature and VCC range

■ Advanced oxide-isolated, ion-implanted Schottky TTL

process

■ Functionally and pin-for-pin compatible with Schottky

and low power Schottky TTL counterpart

■ Improved AC performance over Schottky and low power

Schottky counterparts

■ Synchronously programmable

■ Internal look ahead for fast counting

■ Carry output for n-bit cascading

■ Synchronous counting

■ ESD inputs