SNx4HC74 Dual D-Type Positive-Edge-Triggered Flip-Flops With Clear and Preset

1 Features

• Buffered inputs

• Wide operating voltage range: 2 V to 6 V

• Wide operating temperature range: -40°C to +85°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 SNx4HC74 devices contain two independent

D-type

positive-edge-triggered

flip-flops

with

asynchronous preset and clear pins for each.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SN74HC74D

SOIC (14)

8.70 mm × 3.90 mm

SN74HC74DB

SSOP (14)

6.50 mm × 5.30 mm

SN74HC74N

PDIP (14)

19.30 mm × 6.40 mm

SN74HC74NS

SO (14)

10.20 mm × 5.30 mm

SN74HC74PW

TSSOP (14)

5.00 mm × 4.40 mm

SN54HC74J

CDIP (14)

21.30 mm × 7.60 mm

SN54HC74W

CFP (14)

9.20 mm × 6.29 mm

SN54HC74FK

LCCC (20)

8.90 mm × 8.90 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

xCLK

C

xD

C

C

C

C

xQ

C

xPRE

xQ

xCLR

C

C

C

C

Functional pinout

SN74HC74, SN54HC74

SCLS094F – DECEMBER 1982 – REVISED JUNE 2021

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.