3.3V 16-bit registered transceiver; 3-state

The 74LVT16543A is a high-performance BiCMOS product designed for VCC operation at 3.3 V. The device can be used as two 8-bit transceivers or one 16-bit transceiver.

The 74LVT16543A contains two sets of eight D-type latches, with separate control pins for each set. Using data flow from A to B as an example, when the A-to-B enable (nEAB) input and the A-to-B latch enable (nLEAB) input are LOW, the A-to-B path is transparent.

A subsequent LOW-to-HIGH transition of the nLEAB signal puts the A data into the latches where it is stored and the B outputs no longer change with the A inputs. With nEAB and nOEAB both LOW, the 3-State B output buffers are active and display the data present at the outputs of the A latches.

Control of data flow from B to A is similar, but using the nEBA, nLEBA, and nOEBA inputs.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

Features and benefits

  • 16-bit universal bus interface
  • 3-state buffers
  • Input and output interface capability to systems at 5 V supply
  • TTL input and output switching levels
  • Output capability: +64 mA/-32 mA
  • Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs
  • Live insertion/extraction permitted
  • Power-up 3-state
  • Power-up reset
  • No bus current loading when output is tied to 5 V bus
  • Latch-up protection:
    • JESD78B Class II exceeds 500 mA
  • ESD protection:
    • HBM: JESD22-A114F exceeds 2000 V
    • MM: JESD22-A115-A exceeds 200 V


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)Package name
74LVT16543ADGGProduction2.7 - 3.6n.a.TTL-32/+642.216150medium-40~859321.0TSSOP56


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Tube in DrypackActiveLVT16543A74LVT16543ADGGS
( 9352 030 40512 )
Reel 13" Q1/T1 in DrypackActiveLVT16543A74LVT16543ADGGY
( 9352 030 40518 )

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
74LVT16543ADGG74LVT16543ADGGS74LVT16543ADGGAlways Pb-free70.81.337.52E822
74LVT16543ADGG74LVT16543ADGGY74LVT16543ADGGAlways Pb-free70.81.337.52E822
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74LVT16543A3.3 V 16-bit registered transceiver; 3-stateData sheet2018-10-01
lvt16543alvt16543a IBIS modelIBIS model2013-04-07
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
lvt16lvt16 Spice modelSPICE model2013-05-06
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT364-1plastic, thin shrink small outline package; 56 leads; 0.5 mm pitch; 14 mm x 6.1 mm x 1.2 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
lvt16543alvt16543a IBIS modelIBIS model2013-04-07
lvt16lvt16 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.