3.3V Octal transceiver with direction pin; inverting (3-State)

The LVT640 is a high-performance BiCMOS product designed for VCC operation at 3.3V.

This device is an octal transceiver featuring inverting 3-State bus compatible outputs in both send and receive directions. The control function implementation minimizes external timing requirements. The device features an Output Enable (OE) input for easy cascading and a Direction (DIR) input for direction control.

Features and benefits

  • Cctal bidirectional bus interface
  • 3-State buffers
  • Output capability: +64 mA / -32 mA
  • TTL input and output switching levels
  • Input and output interface capability to systems at 5 V supply
  • Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs
  • Live insertion/extraction permitted
  • Power-up 3-State
  • No bus current loading when output is tied to 5 V bus
  • Latch-up protection exceeds 500mA per JEDEC Std 17
  • ESD protection exceeds 2000 V per MIL STD 883 Method 3015 and 200 V per Machine Model


Type numberProduct statusVCC(A) (V)VCC(B) (V)Logic switching levelsOutput drive capabilitytpd (ns)No of bitsfmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74LVT640DProduction2.7 - 3.6n.a.TTL-32/+642.48150medium-40~858023.156SO20
74LVT640PWProduction2.7 - 3.6n.a.TTL-32/+642.48150medium-40~85983.841TSSOP20


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT163-1Reel 13" Q1/T1Active74LVT640D74LVT640D,118
( 9352 130 70118 )
Bulk PackActive74LVT640D74LVT640D,112
( 9352 130 70112 )
Reel 13" Q1/T1ActiveLVT64074LVT640PW,118
( 9352 130 90118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments

    Quality, reliability & chemical content

    Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
    74LVT640D74LVT640D,11874LVT640Dweek 4, 200470.81.337.52E811
    74LVT640D74LVT640D,11274LVT640Dweek 4, 200470.81.337.52E811
    74LVT640PW74LVT640PW,11874LVT640PWweek 7, 200570.81.337.52E811
    Quality and reliability disclaimer

    Documentation (7)

    File nameTitleTypeDate
    74LVT6403.3 V Octal transceiver with direction pin, inverting (3-state)Data sheet2017-04-10
    lvt640lvt640 IBIS modelIBIS model2013-04-07
    Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
    lvtlvt Spice modelSPICE model2013-05-06
    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
    lvt640lvt640 IBIS modelIBIS model2013-04-07
    lvtlvt Spice modelSPICE model2013-05-06

    Ordering, pricing & availability


    As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

    Sample orders normally take 2-4 days for delivery.

    If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.