CDx4AC257, CDx4ACT257, CD74ACT258 Quad 2-Input Multiplexer with Three-State

Outputs

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.

Device Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

BODY SIZE(3)

CDx4AC257,

CDx4ACT257,

CD74ACT258

D (SOIC, 16)

9.9mm × 6mm

9.9mm × 3.9mm

N (PDIP, 16)

19.3mm × 9.4mm

19.3mm × 6.35mm

PW (TSSOP, 16)

5mm × 6.4mm

5mm × 4.4mm

BQB (WQFN, 16)

3.5mm × 2.5mm

3.5mm × 2.5mm

(1)

For more information, see Section 10.

(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.

Functional Diagram

CD54AC257, CD74AC257, CD54ACT257, CD74ACT257, CD74ACT258

SCHS248C – NOVEMBER 1998 – REVISED APRIL 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.