CDx4AC157 Quadruple 2-Line to 1-Line Data Selectors/Multiplexers

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

• Balanced propagation delay

• ±24mA output drive current- fanout to 15F devices

2 Applications

• Data selection

• Multiplexing

3 Description

These quadruple 2-line to 1-line data selectors/

multiplexers are designed for 1.5V to 5.5V VCC

operation

The ’AC157 devices feature a common strobe (G)

input. When the strobe is high, all outputs are low.

When the strobe is low, a 4-bit word is selected from

one of two sources and is routed to the four outputs.

The devices provide true data.

Device Information

PART NUMBER

PACKAGE(1)

PACKAGE

SIZE(2)

BODY SIZE(3)

CD54AC157

J (CDIP, 16)

21.34mm ×

7.62mm

21.34mm ×

6.92mm

CD74AC157

N (PDIP, 16)

19.3mm × 9.4mm

19.3mm ×

6.35mm

D (SOIC, 16)

9.9mm × 6mm

9.9mm × 3.91mm

BQB (WQFN, 16) 3.5mm × 2.5mm

3.5mm × 2.5mm

(1)

For more information, see Section 11.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

(3)

The body size (length × width) is a nominal value and does

not include pins.

A/B

xA

xB

xY

G

Logic Diagram

CD54AC157, CD74AC157

SCHS335A – MARCH 2003 – REVISED JUNE 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.