Dual D-type flip-flop with set and reset; positive-edge trigger

The 74LVC74A is a dual edge triggered D-type flip-flop with individual data (nD) inputs, clock (nCP) inputs, set (nSD) and (nRD) inputs, and complementary nQ and nQ outputs.

The set and reset are asynchronous active LOW inputs and operate independently of the clock input. Information on the data input is transferred to the nQ output on the LOW-to-HIGH transition of the clock pulse. The nD inputs must be stable one set-up time prior to the LOW-to-HIGH clock transition, for predictable operation.

Schmitt trigger action at all inputs makes the circuit highly tolerant of slower input rise and fall times.

Features and benefits

  • 5 V tolerant inputs for interlacing with 5 V logic
  • Wide supply voltage range from 1.2 V to 3.6 V
  • CMOS low power consumption
  • Direct interface with TTL levels
  • Complies with JEDEC standard:
    • JESD8-7A (1.65 V to 1.95 V)
    • JESD8-5A (2.3 V to 2.7 V)
    • JESD8-C/JESD36 (2.7 V to 3.6 V)
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-B exceeds 200 V
    • CDM JESD22-C101E exceeds 1000 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C


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
74LVC74ABQProduction1.2 - 3.6CMOS/LVTTL± 242.5250low-40~12510721.775DHVQFN14
74LVC74ADProduction1.2 - 3.6CMOS/LVTTL± 242.5250low-40~12510921.068SO14
Not for design in1.2 - 3.6CMOS/LVTTL+/- 242.5250low-40~12515640.0SSOP14
74LVC74APWProduction1.2 - 3.6CMOS/LVTTL± 242.5250low-40~1251428.168TSSOP14


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT762-1Reel 7” Q1/T1 or Q2/T3ActiveVC74A74LVC74ABQ,115
( 9352 735 02115 )
Reel 13" Q1/T1Active74LVC74AD74LVC74AD,118
( 9352 607 34118 )
Bulk PackActive74LVC74AD74LVC74AD,112
( 9352 607 34112 )

Reel 13" Q1/T1ActiveLVC74A74LVC74ADB,118
( 9352 607 35118 )
Bulk PackActiveLVC74A74LVC74ADB,112
( 9352 607 35112 )
Reel 13" Q1/T1ActiveLVC74A74LVC74APW,118
( 9352 607 36118 )
Bulk PackActiveLVC74A74LVC74APW,112
( 9352 607 36112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74LVC74ABQ74LVC74ABQ,11574LVC74ABQAlways Pb-free123.83.872.58E811
74LVC74AD74LVC74AD,11874LVC74ADweek 32, 2004123.83.872.58E811
74LVC74AD74LVC74AD,11274LVC74ADweek 32, 2004123.83.872.58E811
74LVC74ADB,11874LVC74ADBweek 13, 200511
74LVC74ADB,11274LVC74ADBweek 13, 200511
74LVC74APW74LVC74APW,11874LVC74APWweek 10, 2005123.83.872.58E811
74LVC74APW74LVC74APW,11274LVC74APWweek 10, 2005123.83.872.58E811
Quality and reliability disclaimer

Documentation (14)

File nameTitleTypeDate
74LVC74ADual D-type flip-flop with set and reset; positive-edge triggerData sheet2020-06-18
AN11009Pin FMEA for LVC familyApplication note2019-01-09
lvc74alvc74a IBIS modelIBIS model2013-04-07
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
lvclvc Spice modelSPICE model2013-05-06
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT337-1plastic, shrink small outline package; 14 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyPackage information2020-04-21
SOT762-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 14 terminals; 0.5 mm pitch; 3 mm x 2.5 mm x 1 mm bodyPackage information2020-04-21
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT402-1plastic, thin shrink small outline package; 14 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyPackage information2020-04-21


If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.


File nameTitleTypeDate
lvc74alvc74a IBIS modelIBIS model2013-04-07
lvclvc Spice modelSPICE model2013-05-06

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