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74AHC574; 74AHCT574

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

The 74AHC574; 74AHCT574 are high-speed Si-gate CMOS devices and are pin compatible with Low Power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74AHC574; 74AHCT574 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and 3-state outputs for bus oriented applications. A clock (CP) and an output enable (OE) input are common to all flip-flops.

The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition.

When OE is LOW the contents of the 8 flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops.

The 74AHC574; 74AHCT574 is functionally identical to the 74AHC564; 74AHCT564, but has non-inverting outputs. The 74AHC574; 74AHCT574 is functionally identical to the 74AHC374; 74AHCT374, but has a different pinning.

Features and benefits

  • Balanced propagation delays
  • All inputs have a Schmitt-trigger action
  • 3-state non-inverting outputs for bus orientated applications
  • 8-bit positive, edge-triggered register
  • Independent register and 3-state buffer operation
  • Common 3-state output enable input
  • For 74AHC574 only: operates with CMOS input levels
  • For 74AHCT574 only: operates with TTL input levels
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22-C101C exceeds 1000 V
  • Multiple package options
  • 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
74AHC574BQProduction2.0 - 5.5CMOS± 84.4130low-40~125778.148DHVQFN20
74AHC574DProduction2.0 - 5.5CMOS± 84.4130low-40~1258426.460SO20
74AHC574PWProduction2.0 - 5.5CMOS± 84.4130low-40~1251004.444TSSOP20
74AHCT574BQProduction4.5 - 5.5TTL± 84.4130low-40~125778.148DHVQFN20
74AHCT574DProduction4.5 - 5.5TTL± 84.4130low-40~1258426.460SO20
74AHCT574PWProduction4.5 - 5.5TTL± 84.4130low-40~1251004.444TSSOP20

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74AHC574BQ
DHVQFN20
(SOT764-1)
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHC57474AHC574BQ,115
( 9352 855 46115 )
74AHC574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1Active74AHC574D74AHC574D,118
( 9352 630 80118 )
74AHC574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHC57474AHC574PW,118
( 9352 630 81118 )
74AHCT574BQ
DHVQFN20
(SOT764-1)
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHCT57474AHCT574BQ,115
( 9352 855 49115 )
74AHCT574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1Active74AHCT574D74AHCT574D,118
( 9352 630 82118 )
74AHCT574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHCT57474AHCT574PW,118
( 9352 630 83118 )

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))
74AHC574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Bulk PackDiscontinued / End-of-life74AHC574D74AHC574D,112
( 9352 630 80112 )
74AHC574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeAHC57474AHC574PW,112
( 9352 630 81112 )
74AHCT574D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Bulk PackDiscontinued / End-of-life74AHCT574D74AHCT574D,112
( 9352 630 82112 )
74AHCT574PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeAHCT57474AHCT574PW,112
( 9352 630 83112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74AHC574D935263080112
74AHC574PW935263081112
74AHCT574D935263082112
74AHCT574PW935263083112

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74AHC574BQ74AHC574BQ,11574AHC574BQAlways Pb-free29.90.91.11E911
74AHC574D74AHC574D,11874AHC574Dweek 30, 200429.90.91.11E911
74AHC574PW74AHC574PW,11874AHC574PWweek 5, 200529.90.91.11E911
74AHCT574BQ74AHCT574BQ,11574AHCT574BQAlways Pb-free29.90.91.11E911
74AHCT574D74AHCT574D,11874AHCT574Dweek 30, 200429.90.91.11E911
74AHCT574PW74AHCT574PW,11874AHCT574PWweek 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
74AHC574D74AHC574D,11274AHC574Dweek 30, 200429.90.91.11E911
74AHC574PW74AHC574PW,11274AHC574PWweek 5, 200529.90.91.11E911
74AHCT574D74AHCT574D,11274AHCT574Dweek 30, 200429.90.91.11E911
74AHCT574PW74AHCT574PW,11274AHCT574PWweek 7, 200529.90.91.11E911
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
74AHC_AHCT574Octal D-type flip-flop; positive edge-trigger; 3-stateData sheet2017-07-20
ahc574ahc574 IBIS modelIBIS model2013-04-07
ahct574ahct574 IBIS modelIBIS model2013-04-07
SOT764-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm bodyPackage information2021-08-17
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

Support

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Models

File nameTitleTypeDate
ahc574ahc574 IBIS modelIBIS model2013-04-07
ahct574ahct574 IBIS modelIBIS model2013-04-07

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