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PCIe 3.0, 2-Lane (4-Channel), Differential 2:1 Mux/DeMux. 3.3V

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The PI3PCIE3412A is an 8 to 4 differential channel multiplexer/demultiplexer switch. This solution can switch 2 full PCI Express® 3.0, lanes to one of two locations. Using a unique design technique, Diodes has been able to minimize the impedance of the switch such that the attenuation observed through the switch is mininal. The unique design technique also offers a layout targeted for PCI Express signals, which minimizes the channel to channel skew as well as channel to channel crosstalk as required by the PCI Express specification. PI3PCIE3412 can also be used for application up to 12Gbps.


  • 4 Differential Channel, 2:1 Mux/DeMux
  • PCI Express® 3.0 Performance, 8.0Gbps
  • Bi-directional Operation
  • Low Bit-to-Bit Skew, 10ps max
  • Low channel-to-channel skew, 20ps max
  • Low Crosstalk: -35dB@4 GHz
  • High Off Isolation: -22dB@4 GHz (8.0Gbps)
  • Low insertion loss: -1.3dB@4 GHz (8.0Gbps)
  • Return loss: -21dB@4 GHz
  • Support for DP1.2 - HBR2, HBR, RBR
  • Supply Voltage 3.3V
  • Packaging (Pb-free & Green): – 42-contact, TQFN (ZH42)


  • Routing of PCI Express 3.0
  • DP1.2
  • USB 3.2 Gen 1
  • SAS2.0
  • SATA3.0
  • XAUI
  • RXAUI signals with low signal attenuation.

Product Specifications

Product Parameters

Configuration Mux, 2:1: 4-Differential Channels
Differential Channels 4
Lanes 2
Type 2:01
Voltage 3.3

Technical Documents

Design tool model software

Recommended Soldering Techniques


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

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Qty. Carrier
PI3PCIE3412AZHEX Active V-QFN3590-42 TPGP 3500 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 22676 1/26/2022 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 3602 1/26/2022 South America, North America, Asia, Europe, Middle East Buy Now
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PI3PCIE3412AZLEX Active W-QFN3060-40 GREEN 3500 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 2216 1/26/2022 Europe, Asia, North America Buy Now
Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free


Product Change Notices

PCN # Issue Date Implementation Date Subject
PCN-2328 2018-04-12 2018-10-12 Device End of Life for tray packaging only