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Texas Instruments 74FCT821ASC — DC-DC Power Modules

74FCT821ASC Bus Driver, FCT Series, Active

MPN74FCT821ASC
End of Life

74FCT821ASC, BUS DRIVER, FCT SERIES, Package Bulk, lifecycle_stage current, Active, RoHS non-compliant.

$2.19Ref. price · indicative, final on quote
Texas Instruments 74FCT821ASC datasheet (PDF)
RoHSRoHS non-compliant
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

74FCT821ASC specifications
ParameterValue
Series*
PackageBulk

Product details

The 74FCT821ASC is a bus driver from the FCT (Fast CMOS TTL) logic series, designed for buffering and driving high-capacitance backplane or memory-interface lines. Its primary job is to take a digital input and deliver a clean, strong output with the drive strength needed to maintain signal integrity across a loaded bus. This part is RoHS non-compliant, so it belongs in legacy or exempt-equipment BOMs where lead-bearing solder is still permitted.

Lifecycle reality: Active, but with a compliance catch

There is no last-time-buy or obsolescence notice on this part. However, the RoHS non-compliant flag is a hard constraint: if your assembly line or end-customer requires lead-free (RoHS) solder, this part cannot be used. For repair depots or legacy builds that still run tin-lead processes, it is a straightforward drop-in.

For volume production or urgent BOM fills, submit an RFQ to lock allocation and lead time.

Frequently asked questions

What is the pinout of 74FCT821ASC?

Design engineers need to validate pin compatibility with their PCB layout.

What is the price of 74FCT821ASC?

Sourcing buyers compare pricing to meet BOM cost targets.

Is 74FCT821ASC in stock at DigiKey?

Immediate availability is critical for production or repair timelines.

What is the equivalent for 74FCT821ASC?

Maintenance techs and brokers need drop-in alternatives when original is unobtainable.

What is the operating voltage of 74FCT821ASC?

Ensures compatibility with existing system power rails, preventing damage.

Where to buy 74FCT821ASC?

Brokers and buyers need reliable distributors to source the part quickly.