74HC126-Q100; 74HCT126-Q100

Quad buffer/line driver; 3-state

The 74HC126-Q100; 74HCT126-Q100 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.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Wide supply voltage range from 2.0 to 6.0 V
  • CMOS low power dissipation
  • High noise immunity
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Inverting outputs
  • Complies with JEDEC standards:
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)
  • Input levels:
    • For 74HC126-Q100: CMOS levels
    • For 74HCT126-Q100: TTL levels
  • ESD protection:
    • MIL-STD-883, method 3015 exceeds 2000 V
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)


Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC126D-Q100Production2.0 - 6.0CMOS± 7.8364low-40~125886.645SO14
74HC126PW-Q100Production2.0 - 6.0CMOS± 7.8364low-40~1251273.151.5TSSOP14
74HCT126D-Q100Production4.5 - 5.5TTL± 6364low-40~125886.645SO14
74HCT126PW-Q100Production4.5 - 5.5TTL± 6364low-40~1251273.151.5TSSOP14


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 13" Q1/T1Active74HC126D74HC126D-Q100J
( 9353 000 38118 )
Reel 13" Q1/T1ActiveHC12674HC126PW-Q100J
( 9353 000 39118 )
Reel 13" Q1/T1Active74HCT126D74HCT126D-Q100J
( 9353 000 64118 )
Reel 13" Q1/T1ActiveHCT12674HCT126PW-Q100J
( 9353 000 65118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC126D-Q10074HC126D-Q100J74HC126D-Q100Always Pb-free39.31.37.69E811
74HC126PW-Q10074HC126PW-Q100J74HC126PW-Q100Always Pb-free39.31.37.69E811
74HCT126D-Q10074HCT126D-Q100J74HCT126D-Q100Always Pb-free39.31.37.69E811
74HCT126PW-Q10074HCT126PW-Q100J74HCT126PW-Q100Always Pb-free39.31.37.69E811
Quality and reliability disclaimer

Documentation (10)

File nameTitleTypeDate
74HC_HCT126_Q100Quad buffer/line driver; 3-stateData sheet2021-07-12
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 1.1 mm bodyPackage information2020-04-21
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow 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 information2021-01-06
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08


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
hct12674HCT126 IBIS modelIBIS model2015-05-18


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