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


  • 12 PCIe Gen2 Lanes, 3 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 Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active 324 C Yes Tray
Active 324 C Yes Reel
Active 324 I Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
89PES12T3G2 Data Sheet Datasheet PDF 676 KB
89PES12T3G2 Device Errata (Revision ZA) Errata PDF 34 KB
89PES12T3G2 Device Errata (Revision ZB) Errata PDF 21 KB
89EBPES12T3G2 Eval Board User Manual - Fab # 18-635-001 Datasheet PDF 2.18 MB
User Guides & Manuals
89PES12T3G2 Device User Manual Manual PDF 1.13 MB
PCI Express Browser Rev 5.0.2 User Manual Manual PDF 2.56 MB
Gen2 PCIe Hardware Design Guide Guide PDF 365 KB
Application Notes & White Papers
AN-548 Thermal Characteristics of IDT’S PES12T3G2 and PES16T4G2 PCI Express® Switches Application Note PDF 387 KB
AN-701, Hot-Swap in PCIe Based Systems Application Note PDF 351 KB
AN-538 Hot-Plug Implementation in IDT PCI Express Switches Application Note PDF 167 KB
PDN# : CQ-20-05 End-of-Life (EOL) Process on Select Part Numbers Product Discontinuation Notice PDF 720 KB
PDN# : CQ-17-02R1 Quarterly Market Declined PDN (revision1) Product Discontinuation Notice PDF 647 KB
PDN# : CQ-17-02 Quarterly Market Declined PDN Product Discontinuation Notice PDF 898 KB
89PES12T3G2 BSDL (Revision ZB) Model - BSDL BSDL 10 KB
PCI Express Browser Rev 5.0.2 Linux Installation Software Tool GZ 30.49 MB
PCI Express Browser Rev 5.0.2 Windows Installation - Digitally Signed Software Tool ZIP 104.57 MB
PCI Express Browser Rev 5.0.2 Windows Installation Software Tool ZIP 54.45 MB
PCI Express Browser Rev 4.9 Linux Installation Software Tool ZIP 48.85 MB
89PES12T3G2 BSDL (Revision ZA) Model - BSDL BSDL 10 KB
PCI Express® Gen2/Gen3 Signal Integrity, Switching and Bridging Products Overview Overview PDF 422 KB
89PES12T3G2 Product Brief Product Brief PDF 81 KB
89PES16T4G2 Performance Report Report PDF 248 KB
89PES12T3G2 OrCAD symbol Misc ZIP 6 KB

Boards & Kits

Part Number Title Type Company
89KTPES12T3G2 Evaluation Board SDK for the 89HPES12T3G2