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PI3B3257

3.3V Quad 2:1 Multiplexer/Demultiplexer

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Overview

Product Description

The PI3B3257 is a 3.3 Volt, Quad 2:1 multiplexer/demultiplexer with three-state outputs that is pinout and function compatible with the PI74FCT257T, 74F257, and 74ALS/AS/LS257. Inputs can be connected to outputs with low On-Resistance (5Ω) with no additional ground bounce noise or propagation delay.

Features

  • Near-Zero propagation delay
  • 5Ω switches connect inputs to outputs
  • Fast Switching Speed: 4.8ns max.
  • Ultra-Low Quiescent Power: 0.1μA typical
    • Ideally suited for notebook applications
  • Pin compatible with 74 series 257 logic devices
  • Packaging (Pb-free & Green avaliable):
    • 16-pin 150 mil wide plastic QSOP (Q)
    • 16-pin 150 mil wide plastic SOIC (W)
    • 16-pin 173 mil wide plastic TSSOP (L)

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)

Standard

Configuration

Mux: Quad 2-Channel

Differential Channels

N/A

HotInsertion

0

Lanes

N/A

OtherFeatures

N/A

Rail-to-Rail

0

Signal Type

Single Ended

Single Ended Channels

2

Type

N/A

Voltage

3.3

Technical Documents

Design Tools

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

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Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2770 2025-10-30 2025-10-30 Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products