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3.3V 20Gbps 4 Channel 2x2 Exchange Switch


The PI3DBS16222 is a differential exchange switch featuring pass-through pinout. It supports 2x2 exchange switch operating at 20Gbps, enables applications in PCI Express Gen 4, USB 3.1 Gen 2, Thunderbolt 3, 10G BASE-KR.

With the select control input low, Port A connects to port B, and port C connects to port D for an 8-channel differential pass-though. When the select control input is high Port A connects to port D, and port B connects to port C.


  • Four Differential Channel 2x2 Exchange Switch
  • Data Rate 20Gbps Performance; Enable applications in PCI Express Gen 4, USB 3.1 Gen 2, ThunderboltTM 3, 10G BASEKR
  • Bidirectional Operation
  • Low Bit-to-Bit Skew: 10ps (Between ± Signals)
  • Low Crosstalk:
    • -30dB @ 4.0GHz (8Gbps)
    • -19dB @ 8.0GHz (16Gbps)
  • Low Insertion Loss:
    • -1.0dB @ 4.0GHz (8Gbps)
    • -1.5dB @ 8.0GHz (16Gbps)
    • -2.0dB @ 10 GHz
  • VDD Operating Range: 3.3V ± 10%
  • Industrial Temperature Range: -40°C to 85°C
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • Packaging (Pb-free & Green):
    • 30-contact, TQFN (ZL30), 2.5mm × 4.5mm
    • 24-contact, X1QFN(XEA24), 2mm × 4mm


  • Server/Storage (PCIe Gen 4)
  • PC/Notebook/Tablet/AIO (USB 3.1 Gen 2, Thunderbolt 3)
  • Embedded (USB 3.1 Gen 2)
  • Network Routers and Switch (10G BASE-KR)

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Configuration Mux, 2:2: 2-Differential Channel
Differential Channels 2
Lanes 2
Type Crossbar
Voltage 3.3

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

Request Documents

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change