CD54ACT74_14 Datasheet, PDF (1/14 Pages) Texas Instruments – DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS

CD54ACT74, CD74ACT74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCHS321 – DECEMBER 2002
D Inputs Are TTL-Voltage Compatible
D Speed of Bipolar F, AS, and S, With
Significantly Reduced Power Consumption
D Balanced Propagation Delays
D ±24-mA Output Drive Current
– Fanout to 15 F Devices
D SCR-Latchup-Resistant CMOS Process and
Circuit Design
D Exceeds 2-kV ESD Protection Per
MIL-STD-883, Method 3015
CD54ACT74 . . . F PACKAGE
CD74ACT74 . . . E OR M PACKAGE
(TOP VIEW)
1CLR ₁
1D 2
1CLK 3
1PRE 4
1Q 5
1Q 6
GND 7
14 ^V_CC
13 2CLR
12 2D
11 2CLK
10 2PRE
9 2Q
8 2Q
description/ordering information
The ’ACT74 dual positive-edge-triggered devices are D-type 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 data (D) input meeting the setup time
requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs
at a voltage level and is not related directly to the rise time of the clock pulse. Following the hold-time interval,
data at the D input can be changed without affecting the levels at the outputs.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – E
Tube
CD74ACT74E
CD74ACT74E
–55°C to 125°C SOIC – M
Tube
CD74ACT74M
Tape and reel CD74ACT74M96
ACT74M
CDIP – F
Tube
CD54ACT74F3A
CD54ACT74F3A
† _{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
OUTPUTS
PRE CLR CLK D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H† H†
H
H
↑
H
H
L
H
H
↑
L
L
H
H
H
L
X
Q0 Q0
† _{This configuration is nonstable; that is, it does not}
persist when PRE or CLR returns to its inactive
(high) level.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2002, 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.
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