Overview

The QS3VH251 HotSwitch quad 2:1 multiplexer/demultiplexer is a high bandwidth bus switch with very low ON-resistance, resulting in under 250ps propagation delay through the switch. The combination of near-zero propagation delay, high OFF impedance, and overvoltage tolerance makes the QS3VH251 ideal for high-performance communication applications. The QS3VH251 operates from -40 °C to +85 °C.

QS3VH251 - Block Diagram
QS3VH251 - Block Diagram
  • N-channel FET switches with no parasitic diode to VCC
  • Isolation under power-off conditions
  • No DC path to VCC or GND
  • 5V tolerant in OFF and ON state
  • 5V tolerant I/Os
  • Low RON - 4Ω typical
  • Flat RON characteristics over operating range
  • Rail-to-rail switching 0V to 5V
  • Bidirectional dataflow with near-zero delay: No added ground bounce
  • Excellent RON matching between channels
  • VCC operation: 2.3V to 3.6V
  • High bandwidth - Up to 500MHz
  • LVTTL-compatible control Inputs
  • Undershoot clamp diodes on all switch and control Inputs
  • Low demux capacitance, 4pF typical
  • Available in 16-pin QSOP and TSSOP packages

Applications

  • Hot-swapping
  • Multiplexing/demultiplexing
  • Low distortion analog switch
  • Replaces mechanical relay
  • ATM 25/155 switching

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    QS3VH251PAG
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    		TSSOP 16 C Yes Tube 1 1.061
    QS3VH251PAG8
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    		TSSOP 16 C Yes Reel 1
    QS3VH251QG
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    Samples Available
    		 QSOP 16 C Yes Tube 1 Get Samples,
    QS3VH251QG8
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    view_in_ar
    		QSOP 16 C Yes Reel 1
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