Datasheet
CD54ACT174, CD74ACT174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCHS344 – APRIL 2003
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Inputs Are TTL-Voltage Compatible
Contain Six Flip-Flops With Single-Rail
Outputs
Buffered Inputs
Speed of Bipolar F, AS, and S, With
Significantly Reduced Power Consumption
Balanced Propagation Delays
±24-mA Output Drive Current
– Fanout to 15 F Devices
SCR-Latchup-Resistant CMOS Process and
Circuit Design
Exceeds 2-kV ESD Protection Per
MIL-STD-883, Method 3015
Applications Include:
– Buffer/Storage Registers
– Shift Registers
description/ordering information
The ’ACT174 devices are positive-edge-triggered D-type flip-flops with a direct clear (CLR) input and are
designed for 4.5-V to 5.5-V V
CC
operation.
Information at the data (D) inputs that meets the setup time requirements is transferred to the outputs on the
positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a particular voltage level and is not
directly related to the transition time of the positive-going edge of CLK. When CLK is at either the high or low
level, the D input has no effect at the output.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – E Tube CD74ACT174E CD74ACT174E
55
°
Cto125
°
C
SOIC M
Tube CD74ACT174M
ACT174M
–
55°C
to
125°C
SOIC
–
M
Tape and reel CD74ACT174M96
ACT174M
CDIP – F Tube CD54ACT174F3A CD54ACT174F3A
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each flip-flop)
INPUTS
OUTPUT
CLR CLK D
Q
L X X L
H ↑ HH
H ↑ LL
H L X Q
0
CD54ACT174 ...F PACKAGE
CD74ACT174 ...E OR M PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CLR
1Q
1D
2D
2Q
3D
3Q
GND
V
CC
6Q
6D
5D
5Q
4D
4Q
CLK
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.
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.
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.