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Texas Instruments SN74AS244DW — Logic ICs

SN74AS244DW Bus Driver, AS Series, Active, Bulk

MPNSN74AS244DW
End of Life

Texas Instruments SN74AS244DW, AS Series bus driver, Bulk package, active lifecycle, RoHS non-compliant.

$0.8Ref. price · indicative, final on quote
Texas Instruments SN74AS244DW datasheet (PDF)
RoHSRoHS non-compliant
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AS244DW specifications
ParameterValue
Series*
PackageBulk

Product details

Bus driver for backplane and memory-address buffering

The Texas Instruments SN74AS244DW is an octal bus driver from the AS (Advanced Schottky) logic family, designed to buffer and drive heavily loaded backplane traces, memory address lines, or control signals in 5 V digital systems.

RoHS non-compliance — plan for leaded assembly

That is a hard fit constraint for any BOM that mandates lead-free assembly under RoHS exemptions or corporate environmental policies.

(tubes or loose pieces), not Tape & Reel. That affects how the part feeds into pick-and-place machines — Bulk requires tube feeders or manual placement. For low-volume builds or rework, Bulk is convenient; for high-volume automated lines, factor in the handling change.

Frequently asked questions

What is the function of SN74AS244DW?

It is an octal bus driver from the AS (Advanced Schottky) logic family, used to buffer and drive high-capacitance loads such as backplane traces or memory address lines in 5 V TTL systems.

What is the difference between SN74AS244DW and SN74ALS244DW?

Both are octal bus drivers, but the AS family offers higher switching speed than the ALS family. The ALS variant draws lower power, while AS prioritises propagation delay. The choice depends on whether the timing budget or the power budget is tighter in your design.