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QS3VH2861 - Block Diagram


2.5V/3.3V 10-Bit Flow-Through Pin Out, High Bandwidth Switch

The QS3VH2861 HotSwitch is a high bandwidth bus switch with 10-bit flow-though pin out. The QS3VH2861, with 25 ohm ON resistance and 1.35ns propagation delay, is ideal for line matching and low noise environments. The combination of small propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH2861 ideal for high performance communications applications. The QS3VH2861 operates from -40C to +85C.


  • 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
  • Flat RON characteristics over operating range
  • Rail-to-rail switching 0 - 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
  • LVTTL-compatible control Inputs
  • Undershoot Clamp Diodes on all switch and control Inputs
  • Low I/O capacitance, 4pF typical
  • 25 ohm resistors for low noise and line matching
  • Available in 24 pin QSOP package

Product Specification

FunctionPkg. CodeTemp. RangeBus Width (bits)Core Voltage (V)Output TypeOn Resistance (Ω)Speed Grade
Bus Switch w/Series ResisterPCG24-40 to 85°C103.35Standard

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
QS3VH2861QGActivePCG24QSOP24IYesTubeCheck Availability
QS3VH2861QG8ActivePCG24QSOP24IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
QS3VH2861 Datasheet Datasheet PDF 270 KB Feb 24, 2014
Errata LEN-08-01 Errata PDF 65 KB Aug 18, 2008
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
PCN# A-0508-02: OSET Alternate Assembly Location for Green Product Change Notice PDF 18 KB Sep 2, 2005
PCN# A-0504-02R2: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 38 KB Aug 4, 2005
show all (11)
PCN#A-0504-02R1: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 16 KB Jul 22, 2005
PDN# L_05_01: Obsolecence Notice Product Delete Notice PDF 133 KB Jul 21, 2005
PCN#: TB-0504-01, Transfer Test & Backend from IDT-Manila to IDT Product Change Notice PDF 35 KB Apr 29, 2005
PCN#: A-0504-02, Transfer assembly facility IDT-Manila to OSE-Ph Product Change Notice PDF 47 KB Apr 29, 2005
PCN#:A-0312-02, new die attach material - 8290 Product Change Notice PDF 116 KB Dec 3, 2003
PCN Addendum # L0203-10R1 Fab 2 to Fab 4 Transfer Product Change Notice PDF 110 KB Jan 13, 2003
PCN# L0206-11 ICCQ Max Limit Change Product Change Notice PDF 9 KB Aug 1, 2002
PCN# L0203-10 Fab Transfer from Fab 2 to Fab 4 Product Change Notice PDF 27 KB Apr 15, 2002

Software & Tools

Title Type Format File Size Datesort icon
QS3VH2861 Hspice Model Model - HSPICE ZIP 18 KB Aug 14, 2001
QS3VH2861 IBIS Model Model - IBIS ZIP 9 KB Dec 8, 2003