2

Functional Diagram

TRUTH TABLE

INPUTS

OUTPUTS

S

R

CP

J

K

Q

Q

LH

X

X

X

H

L

H

L

XXX

L

H

L

L

X

X

X

H (Note 1)

H (Note 1)

H

H

↓

L

L

No Change

H

H

↓

HLHL

HH

↓

LHLH

HH

↓

H

H

Toggle

H

H

H

X

X

No Change

H= High Level (Steady State)

L= Low Level (Steady State)

X= Don’t Care

↓= High-to-Low Transition

NOTE:

1. Output states unpredictable if both S and R go High simultaneously after both being low at the same time.

1S

2S

2R

4

10

5

6

1Q

1Q

14

15

1R

2K

12

13

9

7

2Q

2Q

2CP

F/F 1

F/F 2

GND = 8

2J

11

1K

2

1

1CP

1J

3

CD54HC112, CD74HC112, CD54HCT112, CD74HCT112