1 Features

• Operating voltage range of 4.5 V to 5.5 V

• Outputs can drive up to 10 LSTTL loads

• Low power consumption, 80-μA max ICC

• Typical tpd = 10 ns

• ±4-mA output drive at 5 V

• Low input current of 1 μA max

• Inputs are TTL-voltage compatible

• Designed specifically for high-speed memory

decoders and data-transmission systems

• Incorporate two enable inputs to simplify

cascading and/or data reception

2 Description

The ’HCT139 devices are designed for highperformance

memory-decoding or data-routing

applications requiring very short propagation delay

times.