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128 x 128 TSI, 4 I/O at 2Mbps, Variable/Constant Delay, 3.3V

The IDT72V70180 is a non-blocking digital switch that has a capacity of 128 x 128 channels at 2.048 Mb/s. Some of the main features are: programmable stream and channel control, Processor Mode, input offset delay and highimpedance output control. Per-stream input delay control is provided for managing large multi-chip switches that transport both voice channel and concatenated data channels. In addition, input streams can be individually calibrated for input frame offset.


  • 128 x 128 channel non-blocking switching at 2.048 Mb/s
  • Per-channel variable or constant throughput delay
  • Automatic identification of ST-BUS®/GCI interfaces
  • Accepts 4 serial data streams of 2.048 Mb/s
  • Automatic frame offset delay measurement
  • Per-stream frame delay offset programming
  • Per-channel high impedance output control
  • Per-channel Processor Mode
  • Control interface compatible to Intel/Motorola CPUs
  • Connection memory block programming
  • Available in 64-pin Thin Plastic Quad Flatpack (TQFP) and
  • 64-pin Small Thin Quad Flatpack (STQFP)
  • 3.3V Power Supply
  • Operating Temperature Range -40°C to +85°C
  • 3.3V I/O with 5V Tolerant Inputs

Product Specification

Switching CapacityPCM Highways (#)PCM Rate (Mbps)Rate MatchingDelay Mode
128K x 128K42NoYes

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Pb (Lead) FreeCarrier TypeSample & Buy
72V70180PFObsoletePN64TQFP64NoTrayCheck Availability
72V70180PF8ObsoletePN64TQFP64NoReelCheck Availability
72V70180PFGActivePNG64TQFP64YesTrayCheck Availability
72V70180PFG8ActivePNG64TQFP64YesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
72V70180 Data Sheet Datasheet PDF 242 KB Dec 17, 2014
Apps Notes & White Papers
AN-852 Application Considerations for Time-Slot Interchange (TSI) Products Application Note PDF 119 KB May 15, 2014
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 567 KB Aug 26, 2016
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 14, 2012
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 19, 2006
show all (16)
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB May 10, 2006
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 19, 2005
PDN# T-05-02, TSI, Selected Package Obsolescence Product Delete Notice PDF 68 KB Apr 6, 2005
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 14, 2004
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 10, 2003
PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB Mar 20, 2003
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB Mar 20, 2003
PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB Jun 17, 2002
PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB Apr 26, 2002
PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB Dec 14, 2001
PCN# G-0110-06 Mold Compound Product Change Notice PDF 48 KB Dec 14, 2001
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 11, 2001
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB Nov 18, 1999

Software & Tools

Title Type Format File Size Datesort icon
72V70180 TQFP-64 IBIS Model - IBIS ZIP 15 KB Feb 8, 2002