CD54AC112, CD74AC112

DUAL J-K NEGATIVE-EDGE-TRIGGERED FLIP-FLOPS

WITH CLEAR AND PRESET

SCHS325 – JANUARY 2003

1

POST OFFICE BOX 655303

and Balanced Noise Immunity at 30% of the

Supply Voltage

Significantly Reduced Power Consumption

– Fanout to 15 F Devices

Circuit Design

MIL-STD-883, Method 3015

description/ordering information

The ’AC112 devices contain two independent J-K negative-edge-triggered flip-flops. A low level at the preset

(PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE

and CLR are inactive (high), data at the J and K inputs meeting the setup-time requirements is transferred to

the outputs on the negative-going edge of the clock pulse (CLK). Clock triggering occurs at a voltage level and

is not directly related to the fall time of the clock pulse. Following the hold-time interval, data at the J and K inputs

may be changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle

flip-flops by tying J and K high.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – E

Tube

CD74AC112E

CD74AC112E

55

°Cto125°C

SOIC

M

Tube

CD74AC112M

AC112M

–55

°C to 125°C

SOIC – M

Tape and reel

CD74AC112M96

AC112M

CDIP – F

Tube

CD54AC112F3A

CD54AC112F3A

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

CD54AC112 ...F PACKAGE

CD74AC112 ...E OR M PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1CLK

1K

1J

1PRE

1Q

1Q

2Q

GND

1CLR

2CLR

2CLK

2K

2J

2PRE

2Q

Copyright

 2003, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.