CDx4AC299, CD74AC323, CDx4ACT299 8-Lnput Universal Shift/Storage Register with

Common Parallel I/O Pins

1 Features

Type Features

• Buffered inputs

• Typical propagation delay:

6ns @ V CC = 5V, T A = 25°C, C L = 50pF

Family Features

• 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 50ohm transmission lines

2 Description

The RCA CDx4AC299 and CD74AC323 and the

CDx4ACT299 are 3-state, 8-input universal shift/

storage registers with common parallel I/O pins.

Device Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

BODY SIZE(3)

CDx4AC(T)299/

CD74AC323

DW (SOIC, 20)

12.80mm ×

10.3mm

12.80mm × 7.50mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(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

*FAST is a Registered Trademark of Fairchild Semiconductor Corp.

CD54AC299, CD74AC299, CD74AC323, CD54ACT299, CD74ACT299

SCHS288A – DECEMBER 1998 – REVISED DECEMBER 2024

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.