SN74ALVC16821

3.3V 20BIT BUSINTERFACE FLIPFLOP

WITH 3STATE OUTPUTS

SCAS269A − MARCH 1993 − REVISED AUGUST 1995

2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

FUNCTION TABLE

(each 10-bit flip-flop)

INPUTS

OUTPUT

OE

CLK

D

OUTPUT

Q

L

↑

H

H

L

↑

LL

L

H or L

X

Q0

H

X

X

Z

1Q1

2

1Q2

3

1Q3

5

1Q4

6

1Q5

8

1Q6

9

1Q7

10

1Q8

12

1Q9

13

1Q10

14

2Q1

15

2Q2

16

2Q3

17

2Q4

19

2Q5

20

2Q6

21

2Q7

23

2Q8

24

2Q9

26

2Q10

27

1OE

EN2

1

56

1CLK

1D

55

1D1

54

1D2

52

1D3

51

1D4

49

1D5

48

1D6

47

1D7

45

1D8

44

1D9

43

1D10

3D

42

2D1

41

2D2

40

2D3

38

2D4

37

2D5

36

2D6

34

2D7

33

2D8

31

2D9

30

2D10

EN4

28

29

2CLK

2OE

C1

C3

2

4

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