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74HC126; 74HCT126

Quad buffer/line driver; 3-state

The 74HC126; 74HCT126 is a quad buffer/line driver with 3-state outputs controlled by the output enable inputs (nOE). A LOW on nOE causes the outputs to assume a high-impedance OFF-state. 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

  • 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 74HC126: CMOS levels

    • For 74HCT126: TTL levels

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 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)fmax (MHz)Nr of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Rth(j-c) (K/W)Package name
74HC126DProduction2.0 - 6.0CMOS± 7.8364low-40~1258845SO14
74HC126PWProduction2.0 - 6.0CMOS± 7.8364low-40~12512751.5TSSOP14
74HCT126DProduction4.5 - 5.5TTL± 6364low-40~1258845SO14
74HCT126PWProduction4.5 - 5.5TTL± 6364low-40~12512751.5TSSOP14

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC126D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HC126D74HC126D,653
( 9337 570 30653 )
74HC126PW
TSSOP14
(SOT402-1) 		SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_118ActiveHC12674HC126PW,118
( 9351 835 60118 )
74HCT126D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HCT126D74HCT126D,653
( 9337 570 50653 )
74HCT126PW
TSSOP14
(SOT402-1) 		SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_118ActiveHCT12674HCT126PW,118
( 9351 835 50118 )

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))
74HC126D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_652Withdrawn / End-of-life74HC126D74HC126D,652
( 9337 570 30652 )
74HC126PW
TSSOP14
(SOT402-1) 		SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_112Withdrawn / End-of-lifeHC12674HC126PW,112
( 9351 835 60112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC126D9337570306522021-12-312022-06-3074HC126D
    74HC126PW9351835601122021-12-312022-06-3074HC126PW
      74HCT126D9337570506522021-12-312022-06-3074HCT126D
        74HCT126PW9351835501122021-12-312022-06-3074HCT126PW

          Environmental information

          Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
          74HC126D74HC126D,65374HC126Dweek 5, 2004
          74HC126PW74HC126PW,11874HC126PWweek 10, 2005
          74HCT126D74HCT126D,65374HCT126Dweek 5, 2004
          74HCT126PW74HCT126PW,11874HCT126PWweek 10, 2005

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

          Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
          74HC126D74HC126D,65274HC126Dweek 5, 2004
          74HC126PW74HC126PW,11274HC126PWweek 10, 2005
          Quality and reliability disclaimer

          Documentation (10)

          File nameTitleTypeDate
          74HC_HCT126Quad buffer/line driver; 3-stateData sheet2024-02-29
          AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
          hct12674HCT126 IBIS modelIBIS model2015-05-18
          HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
          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 1.2 mm bodyPackage information2023-11-07
          SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
          SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
          WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
          SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07

          Support

          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.

          Models

          File nameTitleTypeDate
          hct12674HCT126 IBIS modelIBIS model2015-05-18

          Ordering, pricing & availability

          Sample

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