Octal buffer/line driver with 5 V tolerant inputs/outputs; inverting; 3-state

The 74LVC240A is an octal inverting buffer/line driver with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Schmitt trigger action at all inputs makes the circuit highly tolerant of slower input rise and fall times.

Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be applied to the outputs. These features allow the use of these devices as translators in mixed 3.3 V or 5 V applications.

The 74LVC240A is functionally identical to the 74LVC244A except that the 244 has non-inverting outputs.

Features and benefits

  • 5 V tolerant inputs/outputs for interfacing with 5 V logic
  • Supply voltage range from 1.2 to 3.6 V
  • CMOS low power consumption
  • Direct interface with TTL levels
  • High-impedance when VCC = 0 V
  • 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-A115B exceeds 200 V
    • CDM JESD22-C101E exceeds 1000 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
74LVC240ABQProduction1.2 - 3.6CMOS/LVTTL± 241758low7850DHVQFN20
74LVC240ADProduction1.2 - 3.6CMOS/LVTTL± 241758low8561SO20
74LVC240APWProduction1.2 - 3.6CMOS/LVTTL± 241758low10044.7TSSOP20


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveLVC240A74LVC240ABQ,115
( 9352 751 01115 )
SOT163-1Reel 13" Q1/T1Active74LVC240AD74LVC240AD,118
( 9352 104 30118 )
Bulk PackActive74LVC240AD74LVC240AD,112
( 9352 104 30112 )
Reel 13" Q1/T1ActiveLVC240A74LVC240APW,118
( 9352 104 50118 )
Bulk PackActiveLVC240A74LVC240APW,112
( 9352 104 50112 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
74LVC240ABQ74LVC240ABQ,11574LVC240ABQAlways Pb-free11
74LVC240AD74LVC240AD,11874LVC240ADweek 30, 200411
74LVC240AD74LVC240AD,11274LVC240ADweek 30, 200411
74LVC240APW74LVC240APW,11874LVC240APWweek 7, 200511
74LVC240APW74LVC240APW,11274LVC240APWweek 7, 200511
Quality and reliability disclaimer

Documentation (9)

File nameTitleTypeDate
74LVC240AOctal buffer/line driver with 5 V tolerant inputs/outputs; inverting; 3-stateData sheet2017-05-04
AN11009Pin FMEA for LVC familyApplication note2019-01-09
lvc240alvc240a IBIS modelIBIS model2013-04-07
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
lvclvc Spice modelSPICE model2013-05-06
SOT764-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm bodyPackage information2020-04-21
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 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
lvc240alvc240a IBIS modelIBIS model2013-04-07
lvclvc Spice modelSPICE model2013-05-06

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