Diodes Incorporated
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PCIe 3.0, 1-lane (2-Channel), Differential 2:1 Mux/DeMux. 3.3V

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Product Description

The PI3PCIE3212 is a PCIe Gen3.0, 8Gbps, 4 to 2 differential, bi-directional channel multiplexer/demultiplexer switch. Due to its low bit-to-bit skew, high channel-tochannel noise isolation and bandwidth, this product is ideal for PCI Express® 3.0 signal switching at 8.0Gbps.


  • 2 Differential Channel, 2:1 Mux/DeMux
  • PCI Express® 3.0 performance, 8.0Gbps
  • Bi-directional operation
  • 3dB Bandwidth: 8.1GHz
  • Low Bit-to-Bit Skew, 10ps max
  • Low channel-to-channel skew: 20ps max
  • Low insertion loss: -1.7dB @4GHz (8.0Gbps)
  • Low return loss: -13.5dB @4GHz (8.0Gbps)
  • Low Crosstalk: -32dB@4GHz (8.0Gbps)
  • Low Off Isolation: -21dB@4GHz (8.0Gbps)
  • Supply Voltage: 3.3V ± 10%
  • Low Current: 0.2mA typ.
  • Packaging (Pb-free & Green): 
    • – 20-contact QFN (2.5 × 4.5mm)


Switch a PCI Express 3.0 lane output between two PCI Express lane inputs. Applications include NBs, PCs, servers, and other embedded devices. Routing of PCI Express 3.0, DP1.2, USB3.0, SAS2.0, SATA3.0, XAUI, RXAUI signals with low signal attenuation.

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Configuration Mux, 2:1: 2-Differential Channel
Differential Channels 2
Lanes 1
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

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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


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