M74HC112

2/12

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

X : Don’t Care

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

PIN No

SYMBOL

NAME AND FUNCTION

1, 13

1CK, 2CK

Clock Input(HIGH to LOW

edge triggered)

2, 12

1K, 2K

Data Inputs: Flip-Flop 1

and 2

3, 11

1J, 2J

Data Inputs: Flip-Flop 1

and 2

4, 10

1PR, 2PR

Set Inputs

5, 9

1Q, 2Q

True Flip-Flop Outputs

6, 7

1Q, 2Q

Complement Flip-Flop

Outputs

15, 14

1CLR, 2CLR Reset Inputs

8

GND

Ground (0V)

16

Vcc

Positive Supply Voltage

INPUTS

OUTPUTS

FUNCTION

CLR

PR

JK

CK

Q

Q

L

H

X

X

X

L

H

CLEAR

H

L

X

X

X

H

L

PRESET

LL

X

X

X

H

H

----

H

H

L

L

Qn

Qn

NO CHANGE

HHH

L

H

L

----

H

H

LH

LH

----

HHHH

Qn

Qn

TOGGLE

H

H

X

X

Qn

Qn

NO CHANGE