Function Tables

BCD Count Sequence (Note 1)

Bi-Quinary (5-2) (Note 2)

H

= HIGH Level

L

= LOW Level

X

= Don’t Care

Note 1: Output QA is connected to input B for BCD count.

Note 2: Output QD is connected to input A for bi-quinary count.

Note 3: Output QA is connected to input B.

Logic Diagram

The J and K inputs shown without connection are for reference only and

are functionally at a high level.

Count

Output

QD

QC

QB

QA

0

L

LLL

1L

L

L

H

2L

L

H

L

3L

L

H

H

4L

H

L

L

5L

H

L

H

6L

H

H

L

7

L

HHH

8

H

LLL

9H

L

L

H

Count

Output

QA

QD

QC

QB

0

L

LLL

1L

L

L

H

2L

L

H

L

3L

L

H

H

4L

H

L

L

5

H

LLL

6H

L

L

H

7H

L

H

L

8H

L

H

H

9H

H

L

L

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