HCF4527B

3/12

TRUTH TABLE

X : Don’t Care

** : Depends on internal state of counter.

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

INPUTS

OUTPUTS

Number of Pulses or Logic Level

Number of Pulses or Output

Logic Level

DCBA

CLK

INH IN

STR

CAS

CLR

SET

OUT

OUT

INH

OUT

"9"

OUT

LLLL

10

LLLLLL

H

1

1

L

L

L

H

10

LLLLL1

111

L

L

H

L

10

LLLLL2

211

L

L

H

H

10

LLLLL3

311

L

H

L

L

10

LLLLL4

411

LHLH

10

LLLLL5

511

L

H

H

L

10

LLLLL6

611

L

H

H

H

10

LLLLL7

711

H

L

L

L

10

LLLLL8

811

H

L

L

H

10

LLLLL9

911

HLHL

10

LLLLL8

811

H

L

H

H

10

LLLLL9

911

H

H

L

L

10

LLLLL8

811

H

H

L

H

10

LLLLL9

911

H

H

H

L

10

LLLLL8

811

HHHH

10

H

LLLL9

911

XXXX

10

L

H

L

L

L

**

**

H

**

XXXX

10

LLLLLL

H

1

1

XXXX

10

L

L

H

L

L

H

*

1

1

H

X

X

X

10

L

L

L

H

L

10

10

H

L

L

X

X

X

10

L

L

LHL

L

H

HL

XXXX

10

L

L

L

LHL

HLH