Diodes Incorporated
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PI3WVR31212 (Obsolete)

DP/HDMI 1:2 De-Multiplexer Switch

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PI3WVR31212 has one passive output port1, one active (DP to HDMI) output port2. Passive output supports DP1.2 at 5.4Gbps in I2C mode. Active port2 supports HDMI1.4b at 3.4Gbps. All two output ports support auto port priority selection. Input port accepts DP1.2 and HDMI2.0 (I2C control mode only) signals associated with output ports as described above.


  • Notebook


  • DP/HDMI 1:2 De-multiplexer switch with 4 high speed differential channel and AUX/DDC, HPD and CAB_DET
  • signal channels
  • One passive output ports for DP1.2 at 5.4Gbps
  • One active output port with integrated DP to HDMI redriver (level shifter) supports HDMI 1.4 at 3.4Gbps
  • Pin control mode supports auto port priority selection only
  • Pin control mode supports port2 with DDC bi-direction buffer switch only
  • I2C control mode supports both auto and manual port priority selection
  • I2C control mode supports port2 with 8 levels equalization and 5 levels pre-emphasis
  • I2C control mode supports port2 with either DDC bidirection buffer switch or DDC passive switch
  • Very low operating power when passive port1 is selected
  • 3.3V power supply
  • 2KV HBM ESD protection for all I/O pins of port1 and all control pins
  • 8kV contact ESD (IEC61000-4-2) protection for all output pins in port2
  • Packaging:
  • 60 pin TQFN package (5x9mm, 0.4mm pitch)

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Configuration Demux, 1:2: 4-differential Channel; 1 Passive, 1 Active
Differential Channels 4
HotInsertion 1
Lanes 4
OtherFeatures NA
RailToRail 0
Signal Type Differential
Single Ended Channels -
Type NA
Voltage 3.3

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Technical Documents

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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-2436 2019-11-14 2020-05-14 Device End of Life (EOL)
PCN-2328 2018-04-12 2018-10-12 Device End of Life for tray packaging only


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