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Texas Instruments MM74HCT640WM — Logic ICs

MM74HCT640WM Bus Transceiver, 74HCT Series, Active

MPNMM74HCT640WM
End of Life

Fairchild 74HCT series bus transceiver, MM74HCT640WM, bidirectional data flow, active lifecycle, Bulk package, RoHS non-compliant.

$0.53Ref. price · indicative, final on quote
Texas Instruments MM74HCT640WM datasheet (PDF)
RoHSRoHS non-compliant
Series74HCT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MM74HCT640WM specifications
ParameterValue
Series74HCT
PackageBulk

Product details

Bus transceiver for 5 V legacy buses

The Fairchild MM74HCT640WM is a bus transceiver from the 74HCT logic family, designed for bidirectional asynchronous data transfer between two buses. It accepts TTL input levels while operating at a standard 5 V supply, making it a direct drop-in for 5 V legacy systems that need to interface with CMOS logic.

That means no last-time-buy scramble, no forced redesign for a replacement.

Sourcing and fit for production BOMs

For a production BOM that already carries this 74HCT bus transceiver, the active status means supply continuity without redesign.

Frequently asked questions

What is the function of the MM74HCT640WM?

It is a bus transceiver from the 74HCT series, used for bidirectional data transfer between two buses in 5 V systems.

What are alternatives or equivalents to the MM74HCT640WM?

For a 5 V-compatible equivalent, look at other 74HCT bus transceivers like the 74HCT245, though pinout and direction control differ.