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General description

The 74LVC543A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families.

The 74LVC543A is an octal registered transceiver containing two sets of D-type latches for temporary storage of the data flow in either direction. Separate latch enable inputs (pins LEAB and LEBA ) and output enable inputs (pins OEAB and OEBA ) are provided for each register to permit independent control of inputting and outputting in either direction of the data flow.

The 74LVC543A contains eight D-type latches, with separate inputs and controls for each set. For data flow from pins A to B, for example, the A to B enable input (pin EAB ) must be LOW in order to enter data from pins A0 to A7 or take data from pins B0 to B7, as indicated in the ?Function table?. With pin EAB LOW, a LOW signal on the A to B latch enable input (pin LEAB ) makes the A to B latches transparent; a subsequent LOW-to-HIGH transition on pin LEAB puts the A data into the latches where it is stored and the B outputs no longer change with the A inputs. With pins EAB and OEAB both LOW, the 3-state B output buffers are active and display the data present at the outputs of the A latches.

Features

  • 5 V tolerant inputs/outputs for interfacing with 5 V logic
  • Supply voltage range from 1.2 V to 3.6 V
  • Complies with JEDEC standard JESD8-B/JESD36
  • CMOS low-power consumption
  • Direct interface with TTL levels
  • 8-bit octal transceiver with D-type latch
  • Back-to-back registers for storage
  • Separate controls for data flow in each direction
  • 3-state non-inverting outputs for bus oriented applications
  • High-impedance when VCC =0 V
  • ESD protection:
    • HBM EIA/JESD22-A114-B exceeds 2000 V
    • MM EIA/JESD22-A115-A exceeds 200 V.
  • Specified from -40 Cel to +85 Cel and -40 Cel to +125 Cel.

Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
74LVC543ABQ9352 753 78118Volume productionSOT815-1
(DHVQFN24)
Reel Pack, SMD, 13"Standard Marking74LVC543ABQ
74LVC543AD74LVC543AD9352 458 50112Volume productionSOT137-1
(SO24)
TubeStandard Marking74LVC543AD
week 13, 2005
74LVC543AD74LVC543AD-T9352 458 50118Volume productionSOT137-1
(SO24)
Reel Pack, SMD, 13"Standard Marking74LVC543AD
week 13, 2005
74LVC543ADB74LVC543ADB9352 458 60112Volume productionSOT340-1
(SSOP24)
TubeStandard Marking74LVC543ADB
week 12, 2005
74LVC543ADB74LVC543ADB-T9352 458 60118Volume productionSOT340-1
(SSOP24)
Reel Pack, SMD, 13"Standard Marking74LVC543ADB
week 12, 2005
74LVC543APW74LVC543APW9352 458 70112Volume productionSOT355-1
(TSSOP24)
TubeStandard Marking74LVC543APW
week 10, 2005
74LVC543APW74LVC543APW-T9352 458 70118Volume productionSOT355-1
(TSSOP24)
Reel Pack, SMD, 13"Standard Marking74LVC543APW
week 10, 2005

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
74LVC543ABQ9352 753  78118        Order samples
74LVC543AD9352 458  50112  0.5500     not available
74LVC543AD9352 458  50118  0.5500      Order samples
74LVC543ADB9352 458  60112  0.5500     not available
74LVC543ADB9352 458  60118  0.5500      Order samples
74LVC543APW9352 458  70112  0.5500     not available
74LVC543APW9352 458  70118  0.5500      Order samples

Block diagrams/pinning

Technical documents

Application Notes

AN240; Interfacing 3 Volt and 5 Volt Applications (15-Sep-95)
AN263_2; Power considerations when using CMOS and BiCMOS logic devices (05-Feb-02)

Parametrics/similar products

Type numberPackageDescriptionPropagation Delay(ns)VoltagePower Dissipation ConsiderationsLogic Switching LevelsOutput Drive Capability
74LVC543ABQSOT815-1
(DHVQFN24)
3.3V Latched Transceiver; Non-Inverting (3-State) 3.3@3.3V 1.2-3.6 Low Power or Battery Applications TTL +/- 24 mA
74LVC543ADSOT137-1
(SO24)
3.3V Latched Transceiver; Non-Inverting (3-State) 3.3@3.3V 1.2-3.6 Low Power or Battery Applications TTL +/- 24 mA
74LVC543ADBSOT340-1
(SSOP24)
3.3V Latched Transceiver; Non-Inverting (3-State) 3.3@3.3V 1.2-3.6 Low Power or Battery Applications TTL +/- 24 mA
74LVC543APWSOT355-1
(TSSOP24)
3.3V Latched Transceiver; Non-Inverting (3-State) 3.3@3.3V 1.2-3.6 Low Power or Battery Applications TTL +/- 24 mA

Similar products

74LVC543A links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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