TECHNICAL DATA

IN74HC112A

Dual J-K Flip-Flop

with Set and Reset

ORDERING INFORMATION

IN74HC112AN Plastic

IN74HC112AD SOIC

High-Performance Silicon-Gate CMOS

The IN74HC112A is identical in pinout to the LS/ALS112. The

device inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

Each flip-flop is negative-edge clocked and has active-low

asynchronous Set and Reset inputs.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices

FUNCTION TABLE

Inputs

Outputs

Set

Reset

Clock

J

K

Q

Q

L

H

X

X

X

H

L

H

L

X

X

X

L

H

L

L

X

X

X

L

*

L

*

H

H

L

L

No Change

H

H

L

H

L

H

H

H

H

L

H

L

H

H

H

H

Toggle

H

H

L

X

X

No Change

H

H

H

X

X

No Change

H

H

X

X

No Change

* Both output will remain low as long as Set and Reset are

low, but the output states are unpredictable if Set and Reset

go high simultaneously

X = Don’t Care

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 8 = GND

Rev. 00