SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
D 4.5-V to 5.5-V VCC Operation
D Inputs Accept Voltages to 5.5 V
D Max tpd 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)
1
14
2
13
3
12
4
11
5
10
6
8
VCC
2CLR
2D
2CLK
2PRE
2Q
2Q
1CLK
NC
1PRE
NC
1Q
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2D
NC
2CLK
NC
2PRE
1Q
GND
NC
2Q
2Q
7
9
1D
1CLR
NC
VCC
2CLR
1CLR
1D
1CLK
1PRE
1Q
1Q
GND
SN54ACT74 . . . FK PACKAGE
(TOP VIEW)
NC − No internal connection
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) 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
PDIP − N
SN74ACT74N
Tube
SN74ACT74D
Tape and reel
SN74ACT74DR
SOP − NS
Tape and reel
SN74ACT74NSR
ACT74
SSOP − DB
Tape and reel
SN74ACT74DBR
AD74
Tube
SN74ACT74PW
Tape and reel
SN74ACT74PWR
CDIP − J
Tube
SNJ54ACT74J
SNJ54ACT74J
CFP − W
Tube
SNJ54ACT74W
SNJ54ACT74W
LCCC − FK
Tube
SNJ54ACT74FK
SNJ54ACT74FK
TSSOP − PW
−55°C
−55
C to 125
125°C
C
TOP-SIDE
MARKING
Tube
SOIC − D
−40°C
−40
C to 85
85°C
C
ORDERABLE
PART NUMBER
PACKAGE†
TA
SN74ACT74N
ACT74
AD74
† 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
! " #$%! " &$'(#! )!%*
)$#!" # ! "&%##!" &% !+% !%" %," "!$%!"
"!)) -!.*
)$#! &#%""/ )%" ! %#%""(. #($)%
!%"!/ (( &%!%"*
&)$#!" #&(! ! 0
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$(%"" !+%-"% !%)* (( !+% &)$#!" &)$#!
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POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
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 either PRE or CLR returns to its
inactive (high) level.
logic diagram, each flip-flop (positive logic)
PRE
CLK
C
C
C
Q
TG
C
C
C
C
D
TG
TG
TG
C
C
C
Q
CLR
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54ACT74
MIN
MAX
MIN
MAX
4.5
5.5
4.5
5.5
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
Input voltage
0
VO
IOH
Output voltage
0
High-level output current
IOL
∆t/∆v
Low-level output current
High-level input voltage
SN74ACT74
2
2
0.8
Input transition rise or fall rate
UNIT
V
V
0.8
V
VCC
VCC
V
−24
−24
mA
24
24
mA
8
8
ns/V
VCC
VCC
0
0
V
TA
Operating free-air temperature
−55
125
−40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = −50 µA
A
VOH
IOH = −24 mA
IOH = −50 mA†
IOH = −75 mA†
SN54ACT74
SN74ACT74
MIN
4.5 V
4.4
4.49
4.4
5.5 V
5.4
5.49
5.4
5.4
4.5 V
3.86
3.7
3.76
5.5 V
4.86
4.7
4.76
5.5 V
MIN
MAX
MIN
IOL = 24 mA
MAX
UNIT
4.4
V
3.86
5.5 V
IOL = 50 µA
A
VOL
TA = 25°C
TYP
MAX
VCC
3.85
4.5 V
0.001
0.1
0.1
0.1
5.5 V
0.001
0.1
0.1
0.1
4.5 V
0.36
0.5
0.44
5.5 V
0.36
0.5
0.44
V
IOL = 50 mA†
IOL = 75 mA†
5.5 V
II
ICC
VI = VCC or GND
VI = VCC or GND,
5.5 V
±0.1
±1
±1
µA
5.5 V
2
40
20
µA
∆ICC‡
One input at 3.4 V,
Other inputs at GND or VCC
1.6
1.5
mA
1.65
5.5 V
IO = 0
5.5 V
1.65
0.6
Ci
VI = VCC or GND
5V
3
† Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
pF
timing characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
TA = 25°C
MIN
MAX
fclock
Clock frequency
tw
Pulse duration
tsu
Setup time, data before CLK↑
th
Hold time, data after CLK↑
SN54ACT74
MIN
145
SN74ACT74
MAX
MIN
85
MAX
125
PRE or CLR low
5
7
6
CLK
5
7
6
Data
3
4
3.5
PRE or CLR inactive
0
0.5
0
1
1
1
UNIT
MHz
ns
ns
ns
switching characteristics over recommended operating free-air temperature (unless otherwise
noted) (see Figure 1)
SN54ACT74
PARAMETER
fmax
tPLH
tPHL
tPLH
tPHL
4
FROM
(INPUT)
TO
(OUTPUT)
PRE or CLR
Q or Q
CLK
Q or Q
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TA = 25°C
MIN
TYP
MAX
MIN
MAX
145
210
85
1
5.5
9.5
1
11.5
1
6
10
1
12.5
1
7.5
11
1
14
1
6
10
1
12
UNIT
MHz
ns
ns
SCAS520H − AUGUST 1995 − REVISED OCTOBER 2003
switching characteristics over recommended operating free-air temperature (unless otherwise
noted) (see Figure 1)
SN74ACT74
FROM
(INPUT)
PARAMETER
fmax
tPLH
tPHL
tPLH
TO
(OUTPUT)
PRE or CLR
Q or Q
CLK
Q or Q
tPHL
TA = 25°C
MIN
TYP
MAX
MIN
145
210
125
3
5.5
9.5
2.5
10.5
3
6
10
3
11.5
4
7.5
11
4
13
3.5
6
10
3
11.5
MAX
UNIT
MHz
ns
ns
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
Cpd
TEST CONDITIONS
Power dissipation capacitance
CL = 50 pF,
TYP
f = 1 MHz
45
UNIT
pF
PARAMETER MEASUREMENT INFORMATION
2 × VCC
500 Ω
From Output
Under Test
CL = 50 pF
(see Note A)
S1
Open
500 Ω
TEST
S1
tPLH/tPHL
Open
tw
LOAD CIRCUIT
3V
3V
Input
1.5 V
0V
VOLTAGE WAVEFORMS
tPHL
tPLH
VOH
50% VCC
VOL
50% VCC
3V
Timing Input
tPLH
tPHL
Out-of-Phase
Output
1.5 V
1.5 V
0V
In-Phase
Output
1.5 V
Input
VOH
50% VCC
VOL
50% VCC
1.5 V
th
tsu
0V
3V
Data Input
1.5 V
1.5 V
0V
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
Samples
(4/5)
(6)
5962-8752501M2A
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59628752501M2A
SNJ54ACT
74FK
5962-8752501MCA
ACTIVE
CDIP
J
14
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8752501MC
A
SNJ54ACT74J
5962-8752501MDA
ACTIVE
CFP
W
14
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8752501MD
A
SNJ54ACT74W
SN74ACT74D
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74DBR
ACTIVE
SSOP
DB
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AD74
Samples
SN74ACT74DE4
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74DG4
ACTIVE
SOIC
D
14
50
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74DR
ACTIVE
SOIC
D
14
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74DRG4
ACTIVE
SOIC
D
14
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74N
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
N / A for Pkg Type
-40 to 85
SN74ACT74N
Samples
SN74ACT74NE4
ACTIVE
PDIP
N
14
25
RoHS & Green
NIPDAU
N / A for Pkg Type
-40 to 85
SN74ACT74N
Samples
SN74ACT74NSR
ACTIVE
SO
NS
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ACT74
Samples
SN74ACT74PW
ACTIVE
TSSOP
PW
14
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AD74
Samples
SN74ACT74PWR
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AD74
Samples
SN74ACT74PWRE4
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
AD74
Samples
SNJ54ACT74FK
ACTIVE
LCCC
FK
20
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
59628752501M2A
SNJ54ACT
74FK
Addendum-Page 1
Samples
Samples
Samples
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
Orderable Device
14-Oct-2022
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
(3)
Device Marking
Samples
(4/5)
(6)
SNJ54ACT74J
ACTIVE
CDIP
J
14
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8752501MC
A
SNJ54ACT74J
SNJ54ACT74W
ACTIVE
CFP
W
14
1
Non-RoHS
& Green
SNPB
N / A for Pkg Type
-55 to 125
5962-8752501MD
A
SNJ54ACT74W
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of