SN74ACT74DRG4 Datasheet, PDF (1/21 Pages) Texas Instruments – DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET

D 4.5-V to 5.5-V V_CC Operation
D Inputs Accept Voltages to 5.5 V
SN54ACT74, SN74ACT74
DUAL POSITIVEĆEDGEĆTRIGGERED DĆTYPE FLIPĆFLOPS
WITH CLEAR AND PRESET
SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
D Max t_pd of 10.5 ns at 5 V
D Inputs Are TTL-Voltage Compatible
SN54ACT74 . . . J OR W PACKAGE
SN74ACT74 . . . D, DB, N, NS, OR PW 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
SN54ACT74 . . . FK PACKAGE
(TOP VIEW)
1CLK
NC
1PRE
NC
1Q
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2D
NC
2CLK
NC
2PRE
description/ordering information
NC − No internal connection
The ’ACT74 dual positive-edge-triggered devices are D-type flip-flops.
A low level at the preset (PRE) or clear (CLR) input 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 directly related to the rise time of the clock pulse. Following the hold-time interval,
data at D can be changed without affecting the levels at the outputs.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74ACT74N
SN74ACT74N
SOIC − D
Tube
Tape and reel
SN74ACT74D
SN74ACT74DR
ACT74
−40°C to 85°C
SOP − NS
SSOP − DB
Tape and reel
Tape and reel
SN74ACT74NSR
SN74ACT74DBR
ACT74
AD74
TSSOP − PW
Tube
Tape and reel
SN74ACT74PW
SN74ACT74PWR
AD74
CDIP − J
Tube
SNJ54ACT74J
SNJ54ACT74J
−55°C to 125°C CFP − W
Tube
SNJ54ACT74W
SNJ54ACT74W
LCCC − FK
Tube
SNJ54ACT74FK
SNJ54ACT74FK
† _{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.
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  2003, Texas Instruments Incorporated
On products compliant to MILĆPRFĆ38535, 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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