74LVC74APWDH datasheet(3/10 Pages) PHILIPS

Part #	74LVC74APWDH

Description	Dual D-type flip-flop with set and reset; positive-edge trigger

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Dual D-type flip-flop with set and reset;

positive-edge trigger

Philips Semiconductors

Product Specification

74LVC74A

1998 Jun 17

3

PIN DESCRIPTION

NUMBER

SYMBOL

NAME AND FUNCTION

1, 13

1RD, 2RD

Asynchronous reset-direct input

(active LOW)

2, 12

1D, 2D

Data inputs

3, 11

1CP, 2CP

Clock input (LOW-to-HIGH, edge

triggered)

4, 10

1SD, 2SD

Asynchronous set-direct input (active

LOW)

5, 9

1Q, 2Q

True flip-flop outputs

6, 8

1Q, 2Q

Complement flip-flop outputs

7

GND

Ground (0 V)

14

VCC

Positive supply voltage

LOGIC SYMBOL

SV00492

410

113

1SD 2SD

1RD 2RD

SD

RD

2

12

3

11

1D

2D

1CP

2CP

1Q

2Q

5

9

1Q

2Q

5

9

D

CP

Q

FF

Q

FUNCTION TABLE

INPUTS

OUTPUTS

SD

RD

CP

D

Q

L

H

X

H

L

H

L

X

L

H

L

X

H

INPUTS

OUTPUTS

SD

RD

CP

D

Qn+1

H

°

L

H

°

H

L

NOTES:

H = HIGH voltage level

L = LOW voltage level

X = don“t care

° = LOW-to-HIGH CP transition

Qn+1 = state after the next LOW-to-HIGH CP transition

FUNCTIONAL DIAGRAM

SV00494

CP FF1

DQ

Q

1D

2

1CP

3

4

SD

1SD

1 1RD

RD

6

1Q

5

CP FF2

DQ

Q

2D

12

2CP

11

10

SD

2SD

13 2RD

RD

8

2Q

9

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74LVC74APWDH Datasheet(PDF) 3 Page - NXP Semiconductors

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