HD74LS93

Rev.2.00, Feb.18.2005, page 2 of 8

Function Table

• Reset / Count Function Table

Reset inputs

Outputs

H

H

L

L

L

L

L

X

Count

X

L

Count

Note:

H; high level, L; low level, X; irrelevant

• BCD Count Sequence (Notes 1)

Outputs

Count

0

L

L

L

L

1

L

L

L

H

2

L

L

H

L

3

L

L

H

H

4

L

H

L

H

5

L

H

L

H

6

L

H

H

L

7

L

H

H

H

8

H

L

L

L

9

H

L

L

H

10

H

L

H

L

11

H

L

H

H

12

H

H

L

L

13

H

H

L

H

14

H

H

H

L

15

H

H

H

H

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

2. H; high level, L; low level