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Texas Instruments CY74FCT2543ATSOC — Logic ICs
Texas Instruments

CY74FCT2543ATSOC 74FCT Transceiver, 8-bit, 3-State, 24-SOIC

MPNCY74FCT2543ATSOC
End of Life

74FCT series, Transceiver Non-Inverting, 8-bit, 3-State outputs, 4.75 V ~ 5.25 V supply, -40°C to 85°C, 24-SOIC (0.295", 7.50 mm wide), Surface Mount, Tube.

$0.95Ref. price · indicative, final on quote
CY74FCT2543ATSOC datasheet
Packaging24-SOIC (0.295", 7.50mm 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.
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Specifications

CY74FCT2543ATSOC Technical Specifications
ParameterValue
Series74FCT
Logic typeTransceiver, Non-Inverting
Output type3-State
Mounting typeSurface Mount
Voltage4.75V ~ 5.25V
Current - output high, low15mA, 12mA
Operating temperature-40°C ~ 85°C (TA)
PackageTube
Case24-SOIC (0.295\", 7.50mm Width)
Number of elements1
Number of bits per element8

Product details

Eight-bit bus transceiver for 5 V backplanes

The CY74FCT2543ATSOC is an 8-bit non-inverting transceiver from Cypress's 74FCT logic family, with 3-state outputs on both the A and B ports. It handles bidirectional data flow on a 5 V bus, controlled by direction and output-enable pins. The single-element, 8-bit-per-element architecture is a straightforward fit for buffering a data or address bus in industrial controllers, telecom line cards, or any 5 V backplane that needs a clean drive stage. Output drive is rated 15 mA source, 12 mA sink, enough for moderate fan-out on a backplane or to drive a handful of CMOS inputs.

Wide-body 24-SOIC — what the footprint tells you

The package is a 24-SOIC with a 7.50 mm body width (0.295"), the wide-body variant. Surface-mount only; no through-hole option.

Frequently asked questions

What is the function of CY74FCT2543ATSOC?

It is an 8-bit non-inverting transceiver with 3-state outputs, used to buffer bidirectional data on a 5 V bus. Think of it as a controlled gate between two data paths — direction and output-enable pins decide which way the data flows and whether the outputs are active or high-impedance.