1 Features

• Operating voltage range of 4.5V to 5.5V

• TTL-compatible inputs

• Continuous ±24mA output drive at 5V

• Supports up to ±75mA output drive at 5V

in short bursts

• Drives 50Ω transmission lines

• Fast operation with delay of 12.4ns max at 5V

2 Applications

• Increase the number of inputs on a microcontroller

• Read in board revision

3 Description

The SN74ACT165 contains eight shift registers with

asynchronous parallel input loading. Serial data input

allows for daisy-chaining. Added clock inhibit and

inverted output pins provide flexibility for system

design.