1

2

3

4

5

6

7

14

13

12

11

10

9

8

1CLR

1D

1CLK

1PRE

1Q

1Q

GND

2CLR

2D

2CLK

2PRE

2Q

2Q

SN54LVC74A . . . J OR W PACKAGE

SN74LVC74A . . . D, DB, NS, OR PW PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

2D

NC

2CLK

NC

2PRE

1CLK

NC

1PRE

NC

1Q

SN54LVC74A . . . FK PACKAGE

(TOP VIEW)

NC - No internal connection

SN74LVC74A . . . RGY PACKAGE

(TOP VIEW)

1

14

7

8

2

3

4

5

6

13

12

11

10

9

2CLR

2D

2CLK

2PRE

2Q

1D

1CLK

1PRE

1Q

1Q

SN54LVC74A, SN74LVC74A

www.ti.com

SCAS287T – JANUARY 1993 – REVISED JULY 2013

DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH CLEAR AND PRESET

Check for Samples: SN54LVC74A, SN74LVC74A

1

FEATURES

DESCRIPTION

The SN54LVC74A dual positive-edge-triggered D-

•

Operate From 1.65 V to 3.6 V

•

Inputs Accept Voltages to 5.5 V

operation, and the SN74LVC74A dual positive-edge-

•

triggered D-type flip-flop is designed for 1.65-V to 3.6-

•

A low level at the preset (PRE) or clear (CLR) inputs

sets or resets the outputs, regardless of the levels of

•

the other inputs. When PRE and CLR are inactive

(high), data at the data (D) input meeting the setup

•

Latch-Up Performance Exceeds 250 mA Per

time requirements is transferred to the outputs on the

JESD 17

positive-going

edge

of

the

clock

pulse.

Clock

•

ESD Protection Exceeds JESD 22

triggering occurs at a voltage level and is not directly

related to the rise time of the clock pulse. Following

–

2000-V Human-Body Model (A114-A)

the hold-time interval, data at the D input can be

–

200-V Machine Model (A115-A)

changed without affecting the levels at the outputs.

–

1000-V Charged-Device Model (C101)

The data I/Os and control inputs are overvoltage

tolerant. This feature allows the use of these devices

for down-translation in a mixed-voltage environment.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 1993–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

On products compliant to MIL-PRF-38535, all parameters are

Instruments standard warranty. Production processing does not

tested unless otherwise noted. On all other products, production

necessarily include testing of all parameters.

processing does not necessarily include testing of all parameters.