1 Features

• Three-state buffered outputs

• Gated input and output enables

• Fanout (over temperature range)

– Standard outputs : 10 LSTTL loads

– Bus driver outputs : 15 LSTTL loads

• Wide Operating Temperature Range : -55°C to

125°C

• Balanced propagation delay and transition times

• Significant power and reduction compared to

LSTTL logic ICs

• HC types

– 2 V to 6 V operation

– High noise immunity: NIL = 30%, NIH = 30% of

VCC at VCC = 5 V

• HCT types

– 4.5 V to 5.5 V Operation

– Direct LSTTL input logic compatibility, VIL= 0.8

V (Max), VIH = 2 V (Min)

– CMOS input compatibility, Il ≤ 1μA at VOL, VOH

2 Description

The CDx4HC173 and CDx4HCT173 contains four

independent D-type flip-flops with shared clock (CP),

reset (MR), and data enable (E1, E2) pins.