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74AHCT74D

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

Nexperia B.V. All rights reserved 

Nexperia

5. Pinning information

74AHC74; 74AHCT74

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

5.1. Pinning

74AHC74

74AHCT74

1RD 1

1D 2

1CP 3

1SD 4

1Q 5

1Q 6

GND 7

14 VCC

13 2RD

12 2D

11 2CP

10 2SD

9 2Q

8 2Q

001aac449

Fig. 5. Pin configuration SOT108-1 (SO14) and

SOT402-1 (TSSOP14)

74AHC74

74AHCT74

terminal 1

index area

1D 2

1CP 3

1SD 4

1Q 5

1Q 6

GND(1)

13 2RD

12 2D

11 2CP

10 2SD

9 2Q

001aac450

Transparent top view

(1) This is not a ground pin. There is no electrical or

mechanical requirement to solder the pad. In case

soldered, the solder land should remain floating or

connected to GND.

Fig. 6. Pin configuration SOT762-1 (DHVQFN14)

5.2. Pin description

Table 2. Pin description

Symbol

Pin

1RD

1

1D

2

1CP

3

1SD

4

1Q

5

1Q

6

GND

7

2Q

8

2Q

9

2SD

10

2CP

11

2D

12

2RD

13

VCC

14

Description

asynchronous reset direct input (active LOW)

data input

clock input (LOW to HIGH, edge-triggered)

asynchronous set direct input (active LOW)

true flip-flop output

complement flip-flop output

ground (0 V)

complement flip-flop output

true flip-flop output

asynchronous set direct input (active LOW)

clock input (LOW to HIGH, edge-triggered)

data input

asynchronous reset direct input (active LOW)

supply voltage

74AHC_AHCT74

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 22 April 2020

© Nexperia B.V. 2020. All rights reserved

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