Nexperia

74HC273; 74HCT273

Octal D-type flip-flop with reset; positive-edge trigger

5. Pinning information

5.1. Pinning

74HC273

74HCT273

MR

VCC

Q0

Q7

D0

D7

D1

D6

Q1

Q6

Q2

Q5

D2

D5

D3

D4

Q3

Q4

GND

CP

001aae053

1

2

3

4

5

6

7

8

9

10

12

11

14

13

16

15

18

17

20

19

Fig. 5. Pin configuration SOT163-1 (SO20)

and SOT360-1 (TSSOP20)

001aae054

74HC273

74HCT273

Transparent top view

Q4

D3

Q3

D4

D2

D5

Q2

Q5

Q1

Q6

D1

D6

D0

D7

Q0

Q7

9

12

8

13

7

14

6

15

5

16

4

17

3

18

2

19

terminal 1

index area

GND(1)

(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 SOT764-1 (DHVQFN20)

5.2. Pin description

Table 2. Pin description

Symbol

Pin

Description

MR

1

master reset input (active LOW)

Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7

2, 5, 6, 9, 12, 15, 16, 19

flip-flop output

D0, D1, D2, D3, D4, D5, D6, D7

3, 4, 7, 8, 13, 14, 17, 18

data input

GND

10

ground (0 V)

CP

11

clock input (LOW-to-HIGH, edge-triggered)

VCC

20

supply voltage

74HC_HCT273

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 7 — 6 September 2021

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