1 Features

• AC types feature 1.5V to 5.5V operation and

balanced noise immunity at 30 of the supply

voltage

• Speed of bipolar F, AS, and S, with significantly

reduced power consumption

• Designed specifically for high-speed memory

decoders and data-transmission systems

• Incorporate three enable inputs to simplify

cascading and/or data reception

• Balanced propagation delays

• ±24mA output drive current

– Fanout to 15 F Devices

• SCR-latchup-resistant CMOS process and circuit

design

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

method 3015

2 Description

The ’AC138 decoders/demultiplexers are designed for

high-performance memory-decoding and data-routing

applications that require very short propagation-delay

times. In high-performance memory systems, these

decoders can be used to minimize the effects of

system decoding.