1. General description
The 74HC574; 74HCT574 is an 8-bit positive-edge triggered D-type flip-flo p with 3-state
outputs. The de vice features a clock (CP) and output enable (O E) inputs. The flip-flops will
store the st ate of their individual D-in puts that meet the set-up and hold tim e requirement s
on the LOW-to-HIGH clock (CP) transition. A HIGH on OE causes the outputs to assume
a high-impedance OFF-state. Operation of the OE input does not affect the state of the
flip-flops. Input s in clude clamp di odes. This e nables the use of curr ent limitin g resistor s to
interface inp uts to voltages in excess of VCC.
2. Features and benefits
Input levels:
For 74HC574: CMOS level
For 74HCT574: TTL level
3-state non-inverting outputs for bus oriented applications
8-bit positive, edge-triggered register
Common 3-state output enable input
Complies with JEDEC standard no. 7 A
Multiple package options
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 Cto+85C and from 40 Cto+125C
3. Ordering information
74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Rev. 7 — 4 March 2016 Product data sheet
Table 1. Ordering information
Type number Package
Temperatur e range Name Description Version
74HC574D 40 C to +125 C SO20 plastic small outline package; 20 leads;
body width 7.5 mm SOT163-1
74HCT574D
74HC574DB 40 C to +125 C SSOP20 plastic shrink small outline package; 20 leads;
body width 5.3 mm SOT339-1
74HCT574DB
74HC574PW 40 C to +125 C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm SOT360-1
74HCT574PW
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 2 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
4. Functional diagram
Fig 1. Functional di agram
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© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 3 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
5. Pinning information
5.1 Pinning
5.2 Pin description
Fig 3. Logic symbol Fig 4. IEC logic symbol
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Table 2. Pin description
Symbol Pin Description
OE 1 3-state output enable input (active LOW)
D[0:7] 2, 3, 4, 5, 6, 7, 8, 9 data input
GND 10 ground (0 V)
CP 11 clock input (LOW-to-HIGH, edge triggered)
Q[0:7] 19, 18, 17, 16, 15, 14, 13, 12 3-state flip-flop output
VCC 20 supply voltage
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 4 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
6. Functional description
[1] H = HIGH voltage level;
h = HIGH voltage level one setup time prior to the HIGH-to-LOW CP transition;
L = LOW voltage level;
l = LOW voltage level one setup time prior to the HIGH-to-LOW CP transition;
Z = high-impedance OFF-state;
= LOW-to-HIGH clock transition.
7. Limiting values
[1] For SO20: Ptot derates linearly with 8 mW/K above 70 C.
For SSOP20 and TSSOP20 packages: Ptot derates linearly with 5.5 mW/K above 60 C.
8. Recommended operating conditions
Table 3. Function table[1]
Operating mode Input Internal
flip-flop Output
OE CP Dn Qn
Load and read register L lL L
LhH H
Load register and disable output H lL Z
HhH Z
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
VCC supply voltage 0.5 +7 V
IIK input clamping current VI < 0.5 V or VI>V
CC +0.5 V - 20 mA
IOK output clamping current VO<0.5 V or VO>V
CC +0.5V - 20 mA
IOoutput current VO = 0.5 V to (VCC +0.5V) - 35 mA
ICC supply current - +70 mA
IGND ground current - 70 mA
Tstg storage temperature 65 +150 C
Ptot total power dissipation SO20, SSOP20 and TSSOP20 packages [1] - 500 mW
Table 5. Recommended operating con ditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter Conditions 74HC574 74HCT574 Unit
Min Typ Max Min Typ Max
VCC supply voltage 2.0 5.0 6.0 4.5 5.0 5.5 V
VIinput voltage 0 - VCC 0-V
CC V
VOoutput voltage 0 - VCC 0-V
CC V
Tamb ambient temperature 40 +25 +125 40 +25 +125 C
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 5 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
9. Static characteristics
t/V input transition rise and fall rate VCC = 2.0 V - - 625 - - - ns/V
VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V
VCC = 6.0 V - - 83 - - - ns/V
Table 5. Recommended operating con ditions …continued
Voltages are referenced to GND (ground = 0 V) …continued
Symbol Parameter Conditions 74HC574 74HCT574 Unit
Min Typ Max Min Typ Max
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
74HC574
VIH HIGH-level
input voltage VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V
VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V
VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V
VIL LOW-level
input voltage VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V
VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V
VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL
IO=20 A; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
IO=20 A; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=20 A; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V
IO=6.0 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V
IO=7.8 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V
VOL LOW-level
output voltage VI=V
IH or VIL
IO=20A; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V
IO=20A; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO=20A; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V
IO= 6.0 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V
IO= 7.8 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND;
VCC =6.0V --0.1 - 1.0 - 1.0 A
IOZ OFF-state
output current VI=V
IH or VIL; VCC =6.0V;
VO=V
CC or GND --0.5 - 5.0 - 10.0 A
ICC supply current VI=V
CC or GND; IO=0A;
VCC =6.0V - - 8.0 - 80 - 160 A
CIinput
capacitance -3.5- - - - -pF
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 6 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
74HCT574
VIH HIGH-level
input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V
VIL LOW-level
input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL; VCC =4.5V
IO=20 A 4.4 4.5 - 4.4 - 4.4 - V
IO=6 mA 3.98 4.32 - 3.84 - 3.7 - V
VOL LOW-level
output voltage VI=V
IH or VIL; VCC =4.5V
IO=20A - 0 0.1 - 0.1 - 0.1 V
IO= 6.0 mA - 0.16 0.26 - 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND;
VCC =5.5V --0.1 - 1.0 - 1.0 A
IOZ OFF-state
output current VI=V
IH or VIL; VCC =5.5V;
VO=V
CC or GND --0.5 - 5.0 - 10 A
ICC supply current VI=V
CC or GND; IO=0A;
VCC =5.5V - - 8.0 - 80 - 160 A
ICC additional
supply current VI=V
CC 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V;
IO=0A
per input pin; Dn inputs - 50 180 - 225 - 245 A
per input pin; OE input - 125 450 - 563 - 613 A
per input pin; CP input - 150 540 - 675 - 735 A
CIinput
capacitance -3.5- - - - -pF
Table 6. Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 7 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 9.
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
74HC574
tpd propagation
delay CP to Qn; see Figure 6 [1]
VCC = 2.0 V - 47 150 - 190 - 225 ns
VCC = 4.5 V - 17 30 - 35 - 45 ns
VCC =5V; C
L=15pF - 14 - - - - - ns
VCC = 6.0 V - 14 26 - 33 - 38 ns
ten enable time OE to Qn; see Figure 8 [2]
VCC = 2.0 V - 44 140 - 175 - 210 ns
VCC = 4.5 V - 16 28 - 35 - 42 ns
VCC = 6.0 V - 13 24 - 30 - 36 ns
tdis disable time OE to Qn; see Figure 8 [3]
VCC = 2.0 V - 39 125 - 155 - 190 ns
VCC = 4.5 V - 14 25 - 31 - 38 ns
VCC = 6.0 V - 11 21 - 26 - 32 ns
tttransition
time Qn; see Figure 6 [4]
VCC = 2.0 V - 14 60 - 75 - 90 ns
VCC = 4.5 V - 5 12 - 15 - 18 ns
VCC = 6.0 V - 4 10 - 13 - 15 ns
tWpulse width CP HIGH or LOW;
see Figure 7
VCC = 2.0 V 80 14 - 100 - 120 - ns
VCC = 4.5 V 16 5 - 20 - 24 - ns
VCC = 6.0 V 14 4 - 17 - 20 - ns
tsu set-up time Dn to CP; see Figure 7
VCC = 2.0 V 60 6 - 75 - 90 - ns
VCC = 4.5 V 12 2 - 15 - 18 - ns
VCC = 6.0 V 10 2 - 13 - 15 - ns
thhold time Dn to CP; see Figure 7
VCC = 2.0 V 5 0 - 5 - 5 - ns
VCC = 4.5 V 5 0 - 5 - 5 - ns
VCC = 6.0 V 5 0 - 5 - 5 - ns
fmax maximum
frequency CP; see Figure 6
VCC = 2.0 V 6.0 37 - 4.8 - 4.0 - MHz
VCC = 4.5 V 30 112 - 24 - 20 - MHz
VCC =5V; C
L= 15 pF - 123 - - - - - MHz
VCC = 6.0 V 35 133 - 28 - 24 - MHz
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 8 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
[1] tpd is the same as tPLH and tPHL.
[2] ten is the same as tPZH and tPZL.
[3] tdis is the same as tPLZ and tPHZ.
[4] tt is the same as tTHL and tTLH.
[5] CPD is used to determine the dynamic power dissipation (PD in W).
PD=C
PD VCC2fiN+(CLVCC2fo) where:
fi = input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CLVCC2fo) = sum of outputs.
CPD power
dissipation
capacitance
CL=50pF;f=1 MHz;
VI=GNDtoV
CC
[5] -22- - - - -pF
74HCT574
tpd propagation
delay CP to Qn; see Figure 6 [1]
VCC = 4.5 V - 18 33 - 41 - 50 ns
VCC =5V; C
L=15pF - 15 - - - - - ns
ten enable time OE to Qn; see Figure 8 [2]
VCC = 4.5 V - 19 33 - 41 - 50 ns
tdis disable time OE to Qn; see Figure 8 [3]
VCC = 4.5 V - 16 28 - 35 - 42 ns
tttransition
time Qn; see Figure 6 [4]
VCC = 4.5 V - 5 12 - 15 - 18 ns
tWpulse width CP HIGH or LOW;
see Figure 7
VCC = 4.5 V 16 7 - 20 - 24 - ns
tsu set-up time Dn to CP; see Figure 7
VCC = 4.5 V 12 3 - 15 - 18 - ns
thhold time Dn to CP; see Figure 7
VCC = 4.5 V 5 1- 5 - 5 - ns
fmax maximum
frequency CP; see Figure 6
VCC = 4.5 V 30 69 - 24 - 20 - MHz
VCC =5V; C
L=15pF - 76 - - - - - MHz
CPD power
dissipation
capacitance
CL=50pF;f=1 MHz;
VI=GNDtoV
CC 1.5 V [5] -25- - - - -pF
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 9.
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max Min Max
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 9 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
11. Waveforms
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6. Propagation delay input (CP) to output (Qn), output transition time, clock input (CP) pulse width and the
maximum frequency (CP)
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VOL and VOH are typical voltage output levels that occur with the output load.
Fig 7. The data input (D) to clock input (CP) set-up times and clock input (CP) to data input (D) hold times
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© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 10 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 8. Enable and disable times
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Table 8. Measurement points
Type Input Output
VMVMVXVY
74HC574 0.5VCC 0.5VCC 0.1VCC 0.9VCC
74HCT574 1.3 V 1.3 V 0.1VCC 0.9VCC
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 11 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 9. Test circuit for measuring switching times
Table 9. Test data
Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74HC574 VCC 6ns 15pF, 50 pF 1kopen GND VCC
74HCT574 3 V 6 ns 15 pF, 50 pF 1 kopen GND VCC
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 12 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
12. Package outline
Fig 10. Package outline SOT163-1 (SO20)
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© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 13 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Fig 11. Package outline SOT339-1 (SSOP20)
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© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 14 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Fig 12. Package outline SOT360-1 (TSSOP20)
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© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 15 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
13. Abbreviations
14. Revision history
Table 10. Abbreviations
Acronym Description
CMOS Complementary Metal Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
MM Machine Model
TTL Transistor-Transistor Logic
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74HC_HCT574 v.7 20160304 Product data sheet - 74HC_HCT574 v.6
Modifications: Type numbers 74HC574N and 74HCT574N (SOT146-1) remo ved.
74HC_HCT574 v.6 20150126 Product data sheet - 74HC_HCT574 v.5
Modifications: Table 7: Power dissipation capacitance condition for 74HCT574 is corrected.
74HC_HCT574 v.5 20120425 Product data sheet - 74HC_HCT574 v.4
Modifications: VX and VY measurement points added to Tabl e 8.
74HC_HCT574 v.4 20111219 Product data sheet - 74HC_HCT574 v.3
Modifications: Legal pages updated.
74HC_HCT574 v.3 20101215 Product data sheet - 74HC_HCT574_CNV v.2
74HC_HCT574_CNV v.2 19970827 Product specification - -
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 16 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
15. Legal information
15.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device (s) descr ibed in th is document m ay have cha nged since thi s document w as publish ed and may di ffe r in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
15.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liab ility for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and tit le. A short data sh eet is intended
for quick reference only and shou ld not b e relied u pon to cont ain det ailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict wit h the short data sheet, th e
full data sheet shall pre va il.
Product specificat ion The information and data provided in a Product
data sheet shall define the specification of the product as agr eed between
Nexperia and its customer, unless Nexperia and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the Nexperia product is
deemed to off er functions and qualities beyond those described in the
Product data sheet.
15.3 Disclaimers
Limited warr a nty and liability — Information in this document is believed to
be accurate and reliable. However, Nexperia does not give any
representations or warrant ies, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. Nexperia takes no
responsibility for the content in this document if provided by an information
source outside of Nexperia.
In no event shall Nexperia be liable for any indirect, incidental,
punitive, special or consequ ential damages (including - wit hout limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of Nexperia.
Right to make changes — Nexperia reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all informa tion supplied prior
to the publication hereof .
Suitability for use — Nexperia products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in perso nal injury, death or severe property or environmental
damage. Nexperia and its suppliers accept no liability for
inclusion and/or use of Nexperia products in such equipment or
applications and ther efore such inclu sion and/or use is at the cu stomer’s own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and ope ration of their applications
and products using Nexperia products, and Nexperia
accepts no liability for any assistance with applicati ons or customer product
design. It is customer’s sole responsibility to determine whether the Nexperia
product is suitable and fit for the customer’s applications and
products planned, as well as fo r the planned application and use of
customer’s third party customer(s). Custo mers should provide appropriate
design and operating safeguards to minimize the risks associated with t heir
applications and products.
Nexperia does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party custo mer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using Nexperia
products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). Nexperia does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — Nexperia
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nexperia.com/profile/terms, unless otherwise
agreed in a valid written individua l agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
No offer to sell or license — Nothing i n this document may be interpreted or
construed as an of fer t o sell product s that is open for accept ance or the gr ant,
conveyance or implication of any license under any copyrights, patents or
other industrial or inte llectual property rights.
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] dat a sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This docu ment contains the product specification.
© Nexperia B.V. 2017. All rights reserved
74HC_HCT574 All information provided in this document is subject to legal disclaimers.
Product data sheet Rev. 7 — 4 March 2016 17 of 18
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified,
the product is not suitable for aut omotive use. It i s neither qua lified nor tested
in accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of
non-automotive qualified products in au tomotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automot ive specifications and standards, custome r
(a) shall use the product without Nexperia’s warranty of the
product for such au tomotive applications, use and specificatio ns, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies Nexperia for any
liability, damages or failed product claims resulting from custome r design and
use of the product for automotive applications beyond Nexperia’s
standard warranty and Nexperia’s product specifications.
Translations — A non-English (translated) version of a docume nt is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
15.4 Trademarks
Notice: All referenced b rands, produc t names, service names and trademarks
are the property of their respective ow ners.
16. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Nexperia 74HC574; 74HCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
17. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 1
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Functional description . . . . . . . . . . . . . . . . . . . 4
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Recommended operating conditions. . . . . . . . 4