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Texas Instruments SN74S251N3 — Analog & Data Acquisition
Texas Instruments

SN74S251N3 8-Line Input Multiplexer, Active, Through Hole

MPNSN74S251N3
End of Life

Texas Instruments SN74S251N3, 74S series 8-line input multiplexer, through-hole package, active production, RoHS non-compliant.

$0.41Ref. price · indicative, final on quote
SN74S251N3 datasheet
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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

SN74S251N3 Technical Specifications
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Product details

What the SN74S251N3 is and where it fits

The Texas Instruments SN74S251N3 is an 8-line input multiplexer from the 74S Schottky TTL family. It selects one of eight data sources and routes it to a single output, a common function in data-routing, address decoding, and signal-switching applications in legacy digital systems.

RoHS compliance and assembly implications

This part is RoHS non-compliant, meaning it uses lead-bearing solder terminations.

Frequently asked questions

What is the function of the SN74S251N3?

The SN74S251N3 is an 8-line input multiplexer. It selects one of eight input signals and routes it to a single output, controlled by a three-bit address. It is used in data routing, address decoding, and signal selection in TTL logic systems.

What is the equivalent of the SN74S251N3?

No direct pin-compatible equivalent is listed on this record. The SN74LS348N is a related 74-series priority encoder (1 x 8:3) but it performs a different logic function and operates over a 0°C to 70°C temperature range — it is not a multiplexer substitute.

Is the SN74S251N3 RoHS compliant?

No, the SN74S251N3 is RoHS non-compliant. It contains lead in its solder terminations and is not suitable for lead-free assembly processes without a waiver.