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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.