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74HC574; 74HCT574

Octal D-type flip-flop; positive edge-trigger; 3-state

The 74HC574; 74HCT574 is an 8-bit positive-edge triggered D-type flip-flop with 3-state outputs. The device features a clock (CP) and output enable (OE) inputs. The flip-flops will store the state of their individual D-inputs that meet the set-up and hold time requirements 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. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Wide supply voltage range from 2.0 to 6.0 V
  • CMOS low power dissipation
  • High noise immunity
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Complies with JEDEC standards:
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)
  • 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
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC574DProduction2.0 - 6.0CMOS± 7.814133low-40~1258527.561SO20
74HC574PWProduction2.0 - 6.0CMOS± 7.814133low-40~1251004.644.9TSSOP20
74HCT574DProduction4.5 - 5.5TTL± 61576low-40~1258527.561SO20
74HCT574PWProduction4.5 - 5.5TTL± 61576low-40~1251004.644.9TSSOP20

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1 CECCActive74HC574D74HC574D,653
( 9337 155 20653 )
74HC574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC57474HC574PW,118
( 9351 870 20118 )
74HCT574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1 CECCActive74HCT574D74HCT574D,653
( 9337 156 30653 )
74HCT574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT57474HCT574PW,118
( 9351 885 10118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Bulk Pack, CECCDiscontinued / End-of-life74HC574D74HC574D,652
( 9337 155 20652 )
74HC574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHC57474HC574PW,112
( 9351 870 20112 )
74HCT574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Bulk Pack, CECCDiscontinued / End-of-life74HCT574D74HCT574D,652
( 9337 156 30652 )
74HCT574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHCT57474HCT574PW,112
( 9351 885 10112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC574D933715520652
74HC574PW935187020112
74HCT574D933715630652
74HCT574PW935188510112

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC574D74HC574D,65374HC574Dweek 30, 200429.90.91.11E911
74HC574PW74HC574PW,11874HC574PWweek 7, 200529.90.91.11E911
74HCT574D74HCT574D,65374HCT574Dweek 30, 200429.90.91.11E911
74HCT574PW74HCT574PW,11874HCT574PWweek 7, 200529.90.91.11E911

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC574D74HC574D,65274HC574Dweek 30, 200429.90.91.11E911
74HC574PW74HC574PW,11274HC574PWweek 7, 200529.90.91.11E911
74HCT574D74HCT574D,65274HCT574Dweek 30, 200429.90.91.11E911
74HCT574PW74HCT574PW,11274HCT574PWweek 7, 200529.90.91.11E911
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
74HC_HCT574Octal D-type flip-flop; positive edge-trigger; 3-stateData sheet2021-07-30
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2020-04-21
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

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