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Texas Instruments SN74LVC543APWT — Logic ICs

SN74LVC543APWT 8-bit Transceiver, 1.65V-3.6V, 24-TSSOP

MPNSN74LVC543APWT
End of Life

Texas Instruments 74LVC series, SN74LVC543APWT, Transceiver, Non-Inverting, 3-State, 1.65V ~ 3.6V supply, 24mA output, -40°C ~ 85°C, 24-TSSOP.

$1.91Ref. price · indicative, final on quote
Packaging24-TSSOP (0.173", 4.40mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74LVC543APWT Technical Specifications
ParameterValue
Series74LVC
Logic typeTransceiver, Non-Inverting
Output type3-State
Mounting typeSurface Mount
Voltage1.65V ~ 3.6V
Current - output high, low24mA, 24mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-TSSOP (0.173\", 4.40mm Width)
Number of elements1
Number of bits per element8

Product details

What this 8-bit transceiver does on the bus

It provides bidirectional data flow between two 8-bit buses (A and B ports) with a direction control pin, and the 3-state outputs let you isolate the bus when the device is deselected — essential for shared backplanes or multiplexed data paths.

Symmetrical 24 mA source and sink capability means this transceiver can drive a heavily loaded backplane trace or fan out to multiple CMOS inputs without needing an external line driver. At 3.3 V you get clean edges into a 50 pF load; at 1.8 V the edge rate slows, but the drive current stays at 24 mA, so the signal integrity depends more on trace impedance than on supply droop. If your bus runs at 1.65 V, budget extra propagation delay — the 74LVC family slows as the rail drops.

Package and footprint: 24-TSSOP

Housed in a 24-TSSOP package with a 4.40 mm body width and 0.65 mm pin pitch. This is the standard narrow-body TSSOP footprint for octal bus functions — same land pattern as the 74LVC245 and 74LVC541 in the same package. The 0.173 inch (4.40 mm) width keeps the board footprint compact, but the fine pitch means your solder paste stencil aperture needs careful sizing to avoid bridges between adjacent pins.

Temperature grade and deployment

The 3.6 V absolute maximum supply means you cannot run this on a 5 V bus without a series resistor or a level shifter.

Lifecycle and compliance

ROHS3 compliant (lead-free, no exemptions). No PCN or LTB dates have been issued for this specific order code.

Sourcing posture

No minimum order quantity restrictions beyond standard reel increments. For urgent BOM fills, the 24-TSSOP package is common enough that alternative date codes or reel quantities can usually be sourced without requalification.

Frequently asked questions

Is SN74LVC543APWT RoHS compliant?

Yes, it is ROHS3 compliant — no lead, no restricted substances above the exemption thresholds.

What is the difference between SN74LVC543APWT and SN74LVC543APW?

The suffix T indicates Tape & Reel packaging (suitable for automated pick-and-place), while the APW suffix without T typically ships in tubes or trays. The die and electrical specifications are identical.