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74HC174; 74HCT174

Hex D-type flip-flop with reset; positive-edge trigger

The 74HC174; 74HCT174 are hex positive edge-triggered D-type flip-flops with individual data inputs (Dn) and outputs (Qn). The common clock (CP) and master reset (MR) inputs load and reset all flip-flops simultaneously. The D-input that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition is stored in the flip-flop and appears at the Q output. A LOW on MR causes the flip-flops and outputs to be reset LOW. 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
  • Input levels:
    • For 74HC174: CMOS level
    • For 74HCT174: TTL level
  • Six edge-triggered D-type flip-flops
  • Asynchronous master reset
  • Complies with JEDEC standards
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V.
  • Multiple package options
  • Specified from -40 °C to +85 °C and -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
74HC174DProduction2.0 - 6.0CMOS± 5.21799low-40~125804.239SO16
74HC174PWProduction2.0 - 6.0CMOS± 5.21799low-40~1251142.142.4TSSOP16
74HCT174DProduction4.5 - 5.5TTL± 41869low-40~125804.239SO16
74HCT174PWProduction4.5 - 5.5TTL± 41869low-40~1251142.142.4TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC174D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC174D74HC174D,653
( 9337 145 70653 )
74HC174PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC17474HC174PW,118
( 9351 883 60118 )
74HCT174D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT174D74HCT174D,653
( 9337 150 50653 )
74HCT174PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT17474HCT174PW,118
( 9351 873 80118 )

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))
74HC174D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HC174D74HC174D,652
( 9337 145 70652 )
74HC174PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHC17474HC174PW,112
( 9351 883 60112 )
74HCT174D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HCT174D74HCT174D,652
( 9337 150 50652 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC174D933714570652
74HC174PW935188360112
74HCT174D933715050652
74HCT174PW9351873801122018-12-312019-06-3074HCT174PW

    Quality, reliability & chemical content

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    74HC174D74HC174D,65374HC174Dweek 30, 200439.31.37.69E811
    74HC174PW74HC174PW,11874HC174PWweek 10, 200539.31.37.69E811
    74HCT174D74HCT174D,65374HCT174Dweek 6, 200439.31.37.69E811
    74HCT174PW74HCT174PW,11874HCT174PWweek 10, 200539.31.37.69E811

    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
    74HC174D74HC174D,65274HC174Dweek 30, 200439.31.37.69E811
    74HC174PW74HC174PW,11274HC174PWweek 10, 200539.31.37.69E811
    74HCT174D74HCT174D,65274HCT174Dweek 6, 200439.31.37.69E811
    Quality and reliability disclaimer

    Documentation (9)

    File nameTitleTypeDate
    74HC_HCT174Hex D-type flip-flop with reset; positive-edge triggerData sheet2021-09-01
    AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
    HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
    SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
    SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
    SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
    WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
    SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
    SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21

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