Nexperia

74LVC74A

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

4. Functional diagram

mna418

RD

FF

SD

4 10

Q

1Q

2Q

1Q

2Q

5

9

2

12

3

11

6

8

Q

1SD

CP

2CP

1CP

2D

1D D

2SD

1 13

1RD 2RD

Fig. 1. Logic symbol

mna419

6

3

2

C1

4

S

1D

1

R

5

8

11

12

C1

10

S

1D

13

R

9

Fig. 2. IEC logic symbol

RD

FF

SD

4

Q

1Q

1Q

5

2

3

6

Q

1SD

CP

1CP

1D D

1 1RD

mna420

RD

FF

SD

10

Q

2Q

2Q

9

12

11

8

Q

2SD

CP

2CP

2D D

13 2RD

Fig. 3. Functional diagram

mna421

SD

CP

RD

D

C

C

Q

C

C

C

C

C

C

Q

C

C

Fig. 4. Logic diagram for one flip-flop

74LVC74A

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 9 — 20 August 2021

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