Provides high-performance I/O expansion and switching functions between a PCIe upstream port and four downstream ports or peer-to-peer switching between downstream ports.


  • 8 PCIe Gen1 Lanes, 5 Switch Ports
  • Switch architecture optimized for I/O Expansion
  • Supports root-to-peripheral (upstream-to-downstream) and peer-to-peer (downstream-to-downstream) data transfers
  • Internal buffering and flow control credits optimized for maximum bandwidth and large payloads
  • Low latency, Low power

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete CABGA 324 C No Tray
Obsolete CABGA 324 C Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
PES8T5 Data Sheet Datasheet PDF 635 KB
89PES8T5 Data Sheet Datasheet PDF 636 KB
89PES8T5 Device Errata (Revision ZH) Errata PDF 95 KB
89PES8T5 Device Errata (Revision ZD) Errata PDF 115 KB
89PES8T5 Device Errata (Revision ZB) Errata PDF 56 KB
User Guides & Manuals
89PES8T5 Device User Manual Manual PDF 2.17 MB
PES8T5-Device-UserManual.pdf Manual PDF 2.08 MB
EB8T5 Evaluation Board User Manual--Fab 18-613-000 Manual - Eval Board PDF 2.07 MB
Application Notes & White Papers
AN-534 Thermal Management for IDT PCI Express Gen1 I/O Connectivity Switches Application Note PDF 653 KB
AN-538 Hot-Plug Implementation in IDT PCI Express Switches Application Note PDF 167 KB
AN-535 Power Measurement Techniques for IDT PCIe I/O Connectivity Switches Application Note PDF 306 KB
PDN# : CQ-16-04 QUARTER MARKET DECLINED PDN Product Discontinuation Notice PDF 560 KB
PCN I-0711-01 Die Revision Change Product Change Notice PDF 18 KB
PCN I-0707-01 Product Change Notice PDF 18 KB
PCN I-0707-01: Die Revision Change Product Change Notice PDF 18 KB
PCI Express Browser Rev 5.0.2 Windows Installation - Digitally Signed Software Tool ZIP 104.57 MB
89PES8T5 BSDL (Revision ZH) Model - BSDL BSDL 13 KB
89PES8t5 BSDL (Revision ZD) Model - BSDL BSDL 12 KB
PES8T5 OrCAD symbol Misc ZIP 5 KB
89EBPES8T5 Schematics--Fab 18-613-000 (OrCAD Format) Schematic ZIP 876 KB
89PES8T5 Product Brief Product Brief PDF 59 KB
89EBPES8T5 Schematics--Fab 18-613-000 (Cadence Concept Format) Schematic ZIP 2.46 MB
EBPES8T5 Eval Board Cadence Schematics - Fab # 18-613-001 Schematic ZIP 2.60 MB

Boards & Kits

Part Number Title Type Company
89KTPES8T5 System Development Kit for the PES8T5 PCI Express I/O Expansion Switch Renesas