SCLS177E − MARCH 1984 − REVISED AUGUST 2003
D
D
D
D
D
D
Drive Bus Lines Directly or Up To 15 LSTTL
Loads
Low Power Consumption, 80-µA Max ICC
Typical tpd = 22 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
Bus-Structured Pinout
SN54HCT574 . . . J OR W PACKAGE
SN74HCT574 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
OE
1D
2D
3D
4D
5D
6D
7D
8D
GND
description/ordering information
These octal edge-triggered D-type flip-flops
feature 3-state outputs designed specifically for
bus driving. The ’HCT574 devices are particularly
suitable for implementing buffer registers, I/O
ports, bidirectional bus drivers, and working
registers.
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
CLK
2D
1D
SN54HCT574 . . . FK PACKAGE
(TOP VIEW)
3D
4D
5D
6D
7D
The eight flip-flops enter data on the low-to-high
transition of the clock (CLK) input.
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2Q
3Q
4Q
5Q
6Q
8D
GND
CLK
8Q
7Q
A buffered output-enable (OE) input can be used
to place the eight outputs in either a normal logic
state (high or low logic levels) or the
high-impedance state. In the high-impedance
state, the outputs neither load nor drive the bus
lines significantly. The high-impedance state and
increased drive provide the capability to drive bus
lines without interface or pullup components.
OE
VCC
1Q
D Operating Voltage Range of 4.5 V to 5.5 V
D High-Current 3-State Noninverting Outputs
ORDERING INFORMATION
PACKAGE†
TA
PDIP − N
SN74HCT574N
Tube of 25
SN74HCT574DW
Reel of 2000
SN74HCT574DWR
SOP − NS
Reel of 2000
SN74HCT574NSR
HCT574
SSOP − DB
Reel of 2000
SN74HCT574DBR
HT574
Tube of 70
SN74HCT574PW
Reel of 2000
SN74HCT574PWR
Reel of 250
SN74HCT574PWT
CDIP − J
Tube of 20
SNJ54HCT574J
SNJ54HCT574J
CFP − W
Tube of 85
SNJ54HCT574W
SNJ54HCT574W
LCCC − FK
Tube of 55
SNJ54HCT574FK
TSSOP − PW
−55°C
−55
C to 125
125°C
C
TOP-SIDE
MARKING
Tube of 20
SOIC − DW
−40°C to 85°C
ORDERABLE
PART NUMBER
SN74HCT574N
HCT574
HT574
SNJ54HCT574FK
† 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
!"#$ $%$
$&'"%$ !''#$ % & (!)*%$ %#+ '! $&'"
(#&%$ (#' # #'" & #,% $'!"#$ %$%' -%''%$.+
'!$ ('#$/ # $ $##%'*. $*!# #$/ & %**
(%'%"##'+
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1
SCLS177E − MARCH 1984 − REVISED AUGUST 2003
description/ordering information (continued)
OE does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
FUNCTION TABLE
(each flip-flop)
INPUTS
OE
CLK
D
OUTPUT
Q
L
↑
H
H
L
↑
L
L
L
H or L
X
Q0
H
X
X
Z
logic diagram (positive logic)
OE
CLK
1
11
C1
1D
2
19
1Q
1D
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA
Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°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.
2
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SCLS177E − MARCH 1984 − REVISED AUGUST 2003
recommended operating conditions (see Note 3)
SN54HCT574
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
Input voltage
0
VO
∆t/∆v
Output voltage
0
High-level input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
SN74HCT574
2
2
Input transition rise/fall time
V
V
0.8
VCC
VCC
UNIT
0
0
500
0.8
V
VCC
VCC
V
500
ns
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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
VOH
VI = VIH or VIL
IOH = −20 µA
IOH = −6 mA
4.5 V
VOL
VI = VIH or VIL
IOL = 20 µA
IOL = 6 mA
4.5 V
II
IOZ
VI = VCC or 0
VO = VCC or 0
ICC
VI = VCC or 0,
IO = 0
One input at 0.5 V or 2.4 V,
Other inputs at 0 or VCC
5.5 V
∆ICC†
MIN
SN54HCT574
MIN
MAX
SN74HCT574
MIN
4.4
4.499
4.4
4.4
3.98
4.3
3.7
3.84
MAX
UNIT
V
0.001
0.1
0.1
0.1
0.17
0.26
0.4
0.33
5.5 V
±0.1
±100
±1000
±1000
nA
5.5 V
±0.01
±0.5
±10
±5
µA
8
160
80
µA
1.4
2.4
3
2.9
mA
3
10
10
10
pF
5.5 V
4.5 V
to 5.5 V
Ci
TA = 25°C
TYP
MAX
V
† 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.
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
fclock
Clock frequency
tw
Pulse duration, CLK high or low
tsu
Setup time, data before CLK↑
th
Hold time, data after CLK↑
TA = 25°C
MIN
MAX
SN54HCT574
VCC
4.5 V
30
20
24
5.5 V
33
22
27
MIN
MAX
SN74HCT574
MIN
4.5 V
16
24
20
5.5 V
14
22
18
4.5 V
20
30
25
5.5 V
17
27
23
4.5 V
5
5
5
5.5 V
5
5
5
MAX
UNIT
MHz
ns
ns
ns
0
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#/$ (%# & #1#*("#$+ %'%#' %% %$ #'
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3
SCLS177E − MARCH 1984 − REVISED AUGUST 2003
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
fmax
tpd
CLK
Any Q
ten
OE
Any Q
tdis
OE
Any Q
tt
Any Q
TA = 25°C
TYP
MAX
SN54HCT574
SN74HCT574
VCC
MIN
4.5 V
30
36
20
24
5.5 V
33
40
22
27
MIN
MAX
MIN
MAX
UNIT
MHz
4.5 V
30
36
54
45
5.5 V
25
32
48
41
4.5 V
26
30
45
38
5.5 V
23
27
41
34
4.5 V
23
30
45
38
5.5 V
22
27
41
34
4.5 V
10
12
18
15
5.5 V
9
11
16
14
ns
ns
ns
ns
switching characteristics over recommended operating free-air temperature range, CL = 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
fmax
tpd
CLK
Any Q
ten
OE
Any Q
tt
Any Q
TA = 25°C
TYP
MAX
SN54HCT574
SN74HCT574
VCC
MIN
4.5 V
30
36
20
24
5.5 V
33
40
22
27
MIN
MAX
MIN
MAX
UNIT
MHz
4.5 V
40
53
80
66
5.5 V
35
47
71
60
4.5 V
34
47
71
59
5.5 V
29
39
94
78
4.5 V
18
42
63
53
5.5 V
16
38
57
48
ns
ns
ns
operating characteristics, TA = 25°C
PARAMETER
Cpd
TEST CONDITIONS
Power dissipation capacitance per flip-flop
No load
0
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4
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TYP
93
UNIT
pF
SCLS177E − MARCH 1984 − REVISED AUGUST 2003
PARAMETER MEASUREMENT INFORMATION
VCC
ten
RL
tdis
CL
(see Note A)
RL
tPZH
S1
Test
Point
From Output
Under Test
PARAMETER
S2
1 kΩ
tPZL
tPHZ
tPLZ
tpd or tt
1 kΩ
CL
S1
S2
50 pF
or
150 pF
Open
Closed
Closed
Open
Open
Closed
Closed
Open
Open
Open
50 pF
50 pF
or
150 pF
−−
LOAD CIRCUIT
3V
High-Level
Pulse
1.3 V
3V
Reference
Input
1.3 V
0V
1.3 V
tsu
0V
tw
Data
Input 1.3 V
0.3 V
3V
Low-Level
Pulse
1.3 V
1.3 V
Output
Control
(Low-Level
Enabling)
3V
1.3 V
0V
tPLH
In-Phase
Output
1.3 V
10%
tPHL
90%
90%
tr
Out-ofPhase
Output
tPHL
90%
VOH
1.3 V
10% V
OL
tf
1.3 V
10%
tf
3V
1.3 V
0.3 V 0 V
tf
3V
1.3 V
1.3 V
0V
tPZL
Output
Waveform 1
(See Note B)
tPLZ
≈VCC
1.3 V
10%
90%
VOH
VOL
tr
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES
Output
Waveform 2
(See Note B)
VOL
tPHZ
tPZH
tPLH
1.3 V
10%
2.7 V
VOLTAGE WAVEFORMS
SETUP AND HOLD AND INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS
PULSE DURATIONS
1.3 V
2.7 V
tr
0V
Input
th
1.3 V
90%
VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS
NOTES: A. CL includes probe and test-fixture capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
D. For clock inputs, fmax is measured when the input duty cycle is 50%.
E. The outputs are measured one at a time with one input transition per measurement.
F. tPLZ and tPHZ are the same as tdis.
G. tPZL and tPZH are the same as ten.
H. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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5
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2018
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
SN74HCT574DBR
ACTIVE
SSOP
DB
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574DBRE4
ACTIVE
SSOP
DB
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574DW
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HCT574
SN74HCT574DWG4
ACTIVE
SOIC
DW
20
25
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HCT574
SN74HCT574DWR
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HCT574
SN74HCT574DWRG4
ACTIVE
SOIC
DW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HCT574
SN74HCT574N
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
-40 to 85
SN74HCT574N
SN74HCT574NE4
ACTIVE
PDIP
N
20
20
Pb-Free
(RoHS)
CU NIPDAU
N / A for Pkg Type
-40 to 85
SN74HCT574N
SN74HCT574NSR
ACTIVE
SO
NS
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HCT574
SN74HCT574PW
ACTIVE
TSSOP
PW
20
70
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574PWG4
ACTIVE
TSSOP
PW
20
70
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574PWR
ACTIVE
TSSOP
PW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574PWRG4
ACTIVE
TSSOP
PW
20
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
SN74HCT574PWT
ACTIVE
TSSOP
PW
20
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
-40 to 85
HT574
(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.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2018
(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