CD54AC112, CD74AC112
DUAL J-K NEGATIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SCHS325 – JANUARY 2003
CD54AC112 . . . F PACKAGE
CD74AC112 . . . E OR M PACKAGE
(TOP VIEW)
AC Types Feature 1.5-V to 5.5-V Operation
and Balanced Noise Immunity at 30% of the
Supply Voltage
Speed of Bipolar F, AS, and S, With
Significantly Reduced Power Consumption
1CLK
1K
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
1CLR
2CLR
2CLK
2K
1J
Balanced Propagation Delays
1PRE
1Q
±24-mA Output Drive Current
– Fanout to 15 F Devices
1Q
11 2J
SCR-Latchup-Resistant CMOS Process and
Circuit Design
10
9
2Q
2PRE
2Q
GND
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
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP – E
SOIC – M
CDIP – F
Tube
Tube
CD74AC112E
CD74AC112M
CD74AC112E
–55°C to 125°C
AC112M
Tape and reel CD74AC112M96
Tube CD54AC112F3A
CD54AC112F3A
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
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.
Copyright 2003, Texas Instruments Incorporated
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.
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.
1
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