1 Features

• ’AC257, ’ACT257…………. non-inverting outputs

• CD74ACT258 ………………. inverting outputs

• Buffered inputs

• Typical propagation delay

– 4.4ns at V CC = 5V, T A = 25°C, C L = 50pF

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

method 3015

• SCR-latchup-resistant CMOS process and circuit

design

• Speed of bipolar FAST™/AS/S with significantly

reduced power consumption

• Balanced Propagation Delays

• AC types feature 1.5V to 5.5V operation and

balanced noise immunity at 30% of the supply

• ±24mA output drive current

– Fanout to 15 FAST™ ICs

• Drives 50Ω transmission lines

2 Description

The ’AC257, ’ACT257 and CD74ACT258 are quad 2-

input multiplexers with three-state outputs that utilize

Advanced CMOS Logic technology.