1 Features

• LSTTL input logic compatible

– VIL(max) = 0.8 V, VIH(min) = 2 V

• CMOS input logic compatible

– II ≤ 1 μA at VOL, VOH

• Buffered inputs

• 4.5 V to 5.5 V operation

• Wide operating temperature range:

-55°C to +125°C

• Supports fanout up to 10 LSTTL loads

• Significant power reduction compared to LSTTL

logic ICs

2 Applications

• Convert a momentary switch to a toggle switch

• Divide a clock signal by 2 or 4

3 Description

The CDx4HCT74-Q1 devices contain two

independent D-type positive-edge-triggered flip-flops

with asynchronous preset and clear pins for each.