CD54AC112, CD74AC112
DUAL J-K NEGATIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET

SCHS325 – JANUARY 2003
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 AC Types Feature 1.5-V to 5.5-V Operation
and Balanced Noise Immunity at 30% of the
Supply Voltage
C0068 Speed of Bipolar F, AS, and S, With
Significantly Reduced Power Consumption
C0068 Balanced Propagation Delays
C0068 ±24-mA Output Drive Current
– Fanout to 15 F Devices
C0068 SCR-Latchup-Resistant CMOS Process and
Circuit Design
C0068 Exceeds 2-kV ESD Protection Per
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
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – E Tube CD74AC112E CD74AC112E
55°Cto125°C SOIC M
Tube CD74AC112M
AC112M– C to 125 –
Tape and reel CD74AC112M96
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
V
CC
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.