74HC3G34; 74HCT3G34

Triple buffer gate

The 74HC3G34; 74HCT3G34 is a triple buffer. 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 V to 6.0 V
  • Input levels:
    • For 74HC3G34: CMOS level
    • For 74HCT3G34: TTL level
  • Complies with JEDEC standard no. 7 A
  • Symmetrical output impedance
  • High noise immunity
  • Low-power dissipation
  • Balanced propagation delays
  • Multiple package options
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)fmax (MHz)No of bitsPower dissipation considerationsRth(j-a) (K/W)Rth(j-c) (K/W)Package name
74HC3G34DCProduction2.0 - 6.0CMOS± 5.2363low205115VSSOP8
74HC3G34DPProduction2.0 - 6.0CMOS± 5.2363low217106TSSOP8
74HCT3G34DCProduction4.5 - 5.5TTL± 4363low205115VSSOP8
74HCT3G34DPProduction4.5 - 5.5TTL± 4363low217106TSSOP8


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT765-1Reel 7" Q3/T4, ReverseActiveP3474HC3G34DC,125
( 9352 747 77125 )
SOT505-2Reel 7" Q3/T4, ReverseActiveH3474HC3G34DP,125
( 9352 721 46125 )
SOT765-1Reel 7" Q3/T4, ReverseActiveU3474HCT3G34DC,125
( 9352 747 79125 )
SOT505-2Reel 7" Q3/T4, ReverseActiveT3474HCT3G34DP,125
( 9352 721 57125 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC3G34DC74HC3G34DC,12574HC3G34DCweek 1, 200540.81.57.79E411
74HC3G34DP74HC3G34DP,12574HC3G34DPweek 45, 200440.81.57.79E411
74HCT3G34DC74HCT3G34DC,12574HCT3G34DCweek 1, 200540.81.57.79E411
74HCT3G34DP74HCT3G34DP,12574HCT3G34DPweek 42, 200440.81.57.79E411
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74HC_HCT3G34Triple buffer gateData sheet2018-06-12
AN10161PicoGate Logic footprintsApplication note2002-10-29
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
SOT505-2plastic, thin shrink small outline package; 8 leads; 0.65 mm pitch; 3 mm x 3 mm x 1.1 mm bodyPackage information2020-04-21
SOT765-1plastic, very thin shrink small outline package; 8 leads; 0.5 mm pitch; 2 mm x 2.3 mm x 1 mm bodyPackage information2020-04-21


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