SN54HCT273, SN74HCT273

OCTAL D-TYPE FLIP-FLOPS

WITH CLEAR

SCLS068C – NOVEMBER 1988 – REVISED MAY 1997

2

POST OFFICE BOX 655303

1D

3

1D

11

CLK

C1

R

1

1Q

2

4

2D

2Q

5

7

3D

3Q

6

8

4D

4Q

9

13

5D

5Q

12

14

6D

6Q

15

17

7D

7Q

16

18

8D

8Q

19

CLR

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

logic diagram (positive logic)

CLK

1D

3

1D

C1

R

1Q

2

2D

4

1D

C1

R

2Q

5

3D

7

1D

C1

R

3Q

6

4D

8

1D

C1

R

4Q

9

5D

13

1D

C1

R

5Q

12

6D

14

1D

C1

R

6Q

15

7D

17

1D

C1

R

7Q

16

8D

18

1D

C1

R

8Q

19

CLR

11

1

logic diagram, each flip-flop (positive logic)

CLK(I)

R

Q

C

C

D

C

C

C

C

C

C

TG

TG

TG

TG

C

C