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.