1

Data sheet acquired from Harris Semiconductor

SCHS124D

Features

• Hysteresis on Clock Inputs for Improved Noise

Immunity and Increased Input Rise and Fall Times

• Asynchronous Set and Reset

• Complementary Outputs

• Buffered Inputs

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

Description

The ’HC74 and ’HCT74 utilize silicon gate CMOS technology

to achieve operating speeds equivalent to LSTTL parts.

They exhibit the low power consumption of standard CMOS

integrated circuits, together with the ability to drive 10 LSTTL

loads.

This flip-flop has independent DATA, SET, RESET and

CLOCK inputs and Q and Q outputs. The logic level present

at the data input is transferred to the output during the

positive-going transition of the clock pulse. SET and RESET

are independent of the clock and are accomplished by a low

level at the appropriate input.

The HCT logic family is functionally as well as pin compatible

with the standard LS logic family.

Ordering Information

PART NUMBER

TEMP. RANGE

PACKAGE

CD54HC74F3A

-55 to 125

14 Ld CERDIP

CD54HCT74F3A

-55 to 125

14 Ld CERDIP

CD74HC74E

-55 to 125

14 Ld PDIP

CD74HC74M

-55 to 125

14 Ld SOIC

CD74HC74MT

-55 to 125

14 Ld SOIC

CD74HC74M96

-55 to 125

14 Ld SOIC

CD74HCT74E

-55 to 125

14 Ld PDIP

CD74HCT74M

-55 to 125

14 Ld SOIC

CD74HCT74MT

-55 to 125

14 Ld SOIC

CD74HCT74M96

-55 to 125

14 Ld SOIC

NOTE: When ordering, use the entire part number. The suffix 96

denotes tape and reel. The suffix T denotes a small-quantity reel of

250.

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

CD54HC74, CD74HC74,

CD54HCT74, CD74HCT74

Dual D Flip-Flop with Set and Reset

Positive-Edge Trigger

[ /Title

(CD54H

C74,

CD74H

C74,

CD74H

CT74)

/Subject

(Dual D

Flip-

Flop

with Set

January 1998 - Revised September 2003