HCF4089B

3/11

TRUTH TABLE

X : Don’t Care

*: Output same as the first 16 lines of this truth table (depending on values of A, B, C, D)

LOGIC DIAGRAM

INPUTS

OUTPUTS

Number of Pulses or Input Logic Level

Number of Pulses or Output Logic

Level

D

C

B

A

CLOCK

INH IN

STR.

CAS.

CLEAR

SET

OUT

OUT

INH

OUT

"15"

OUT

L

L

L

L

16

L

L

LLL

L

H

11

L

L

L

H

16

L

L

LLL

11

11

L

L

H

L

16

LL

LLL

22

11

L

L

H

H

16

LL

LLL

33

11

L

H

L

L

16

LL

LLL

44

11

L

H

L

H

16

LL

LLL

55

11

L

H

H

L

16

LL

LLL

66

11

L

H

H

H

16

LL

LLL

77

11

H

L

L

L

16

LL

LLL

88

11

H

L

L

H

16

LL

LLL

99

11

H

L

H

L

16

LL

LLL

10

10

11

H

L

H

H

16

LL

LLL

11

11

11

H

H

L

L

16

LL

LLL

12

12

11

H

H

L

H

16

LL

LLL

13

13

11

H

H

H

L

16

LL

LLL

14

14

11

H

H

H

H

16

LL

LLL

15

15

11

XX

XX

16

H

L

L

L

L

••

H

•

X

X

X

X

16

L

H

LLL

L

H

11

XX

XX

16

L

L

H

L

L

H

*

1

1

H

X

X

X

16

L

L

L

H

L

16

16

H

L

L

X

X

X

16

L

L

L

H

L

L

H

H

L

XX

XX

16

L

L

L

L

H

L

H

L

H