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Texas Instruments CY74FCT646CTSOC — Logic ICs
Texas Instruments

CY74FCT646CTSOC 74FCT Transceiver, 8-Bit, 3-State, 24-SOIC

MPNCY74FCT646CTSOC
End of Life

Cypress 74FCT series, CY74FCT646CTSOC, 8-bit non-inverting transceiver with 3-state outputs, 4.75 V ~ 5.25 V supply, 32 mA / 64 mA drive, -40°C to 85°C, 24-SOIC package.

$1.41Ref. price · indicative, final on quote
CY74FCT646CTSOC 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

CY74FCT646CTSOC Technical Specifications
ParameterValue
Series74FCT
Logic typeTransceiver, Non-Inverting
Output type3-State
Mounting typeSurface Mount
Voltage4.75V ~ 5.25V
Current - output high, low32mA, 64mA
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

8-bit 5 V bus transceiver for legacy logic systems

The CY74FCT646CTSOC is an 8-bit bidirectional transceiver from Cypress's 74FCT family, designed for 5 V bus-oriented systems where non-inverting data flow and 3-state output control are required. It combines one direction-control input with an output-enable pin, letting you isolate or connect an 8-bit bus segment on the fly. The 32 mA source / 64 mA sink output drive gives it the muscle to drive heavily loaded backplanes or memory-array address lines without external buffers.

Industrial temperature and SOIC-24 footprint

The 24-SOIC package with 0.295-inch body width and 7.50 mm pitch is a standard footprint — easy to hand-solder or rework with hot air, and widely supported by PCB layout libraries. The wide body also helps with visual inspection of the 3-state control traces after assembly.

Frequently asked questions

Is CY74FCT646CTSOC RoHS compliant?

Yes, the CY74FCT646CTSOC is listed as ROHS3 Compliant, meaning it meets the latest RoHS exemption rules including lead-free solder finishes.

What is the closest functional second-source for CY74FCT646CTSOC?

It is a valid second-source candidate for dual-sourcing the bus transceiver function.