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Texas Instruments SN74AS244N — Logic ICs

SN74AS244N Bus Driver, AS Series, Active, RoHS Non-Compliant

MPNSN74AS244N
End of Life

Texas Instruments SN74AS244N, AS Series bus driver, octal buffer/line driver with 3-state outputs, DIP package, Bulk form, RoHS non-compliant, active lifecycle.

$0.8Ref. price · indicative, final on quote
Texas Instruments SN74AS244N datasheet (PDF)
RoHSRoHS non-compliant
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AS244N specifications
ParameterValue
Series*
PackageBulk

Product details

What the SN74AS244N is — an AS-series octal bus driver

The SN74AS244N is an octal buffer and line driver from Texas Instruments' AS (Advanced Schottky) bipolar logic family, designed to drive heavily loaded backplanes, memory address buses, or multiple TTL inputs with its 3-state outputs. It is a BUS DRIVER, AS SERIES part, meaning it delivers the higher speed and output drive of the AS logic family while maintaining TTL-compatible input thresholds.

Lifecycle and RoHS — active but lead-bearing

That is relevant for sustaining legacy designs that still use the AS logic family. This part is RoHS non-compliant, meaning the leads and internal terminations contain lead (Pb). If your assembly line or contract manufacturer runs RoHS-exempt (lead-bearing) profiles, this is a drop-in fit. For RoHS-only lines, you would need to source a lead-free equivalent or accept the exemption paperwork burden.

Frequently asked questions

What is the difference between SN74AS244N and SN74LS244N?

The SN74AS244N belongs to the Advanced Schottky (AS) family, which offers higher switching speed and output drive than the standard Low-Power Schottky (LS) SN74LS244N. The AS variant is the choice when bus loading or propagation delay demands the extra performance; the LS variant draws less supply current. Both are octal buffers with the same pinout and function.