Diodes Incorporated
W QFN3060 40

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12Gbps 4-Channel HDMI2.1 2-to-1 Active Mux with Linear ReDriver


The PI3HDX12221 is a 2-to-1 active mux switch for 4-channel HDMI link with data rate up to 12Gbps for HDMI2.1 standard. It provides the maximum equalizer gain controls up to +11dB (HDMI2.1 @ 6GHz) and +7dB (HDMI2.0 @ 3GHz) to compensate the insertion loss along the channel connection.

The non-blocking linear RedriverTM design ensures the differential signals conveying pre-shoot and de-emphasis equalization waveforms to be transparently transmitted from source side to the receiver side and linearly compensate the channel loss to achieve longer channel extension. The CTLE equalizers are implemented at the inputs of the Redriver to reduce the ISI jitters and compensate channel loss. The programmable flat gain and output linearity adjustments support the eye diagram opening adjustment.

With the combinational logic control design, the device has reduced the control pins to achieve more compact package dimension. Users can use pin strap method to select different EQ gains, flat gains and output swing linearity for flexible design tuning.


  • 2-to-1 Mux Switch Configuration for 4-channel HDMI Operation
  • Support HDMI 2.1, HDMI 2.0 and HDMI 1.4 signal speeds
  • Quad-level pin strap control through combinational logic table for equalizer gain value selection
  • Quad-level pin strap control for flat gain and output swing linearity selection
  • Input signal detection for automatic power saving operation
  • Single power supply: 3.3v +/-0.3v
  • Commercial temperature support: 0oC to +70oC
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable,
    and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
  • Packaging (Pb-free & Green):
    - 40-pin TQFN 3 x 6 mm


  • Digital TVs
  • Display monitors
  • Gaming consoles
  • Laptop and Desktop PCs
  • Workstation and Server system
  • Docking, KVM and PC peripherals

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 8,4
Data Rate (Gbps) 12
Lanes/Ports 8,4
Output Swing Max (mV) 1200
Programming Interface(s) Pinstrap

Technical Documents

Recommended Soldering Techniques


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

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Related Application FAQs

Related Protocol FAQs