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2:1 HDMI1.4 3.4Gbps Switch with ARC & Fast Switching, Sink side pin-map

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Product Description

PI3HDX621 is the active-type 2:1 switch compliant to HDMI 1.4b specification, featuring equalized TMDS input and preemphasized TMDS outputs, with 3.4 Gbps high speed and long cable application.

Two TMDS input ports switch fast in the built-in high speed Mux through port selection pins. Redriver boost the input signal quality, adjust known channel losses at the transmitter and restore signal integrity at the receiver. It offers doube termination or open drain output mode by output selection pin.

TMDS output can shut down to reduce power dissipation by sink side HPD detection status. DDC 2:1 Mux and ARC drivers are integrated. PI3HDX621 is specified to operate over -40 to 85°C temperature range with 8kV ESD protection pins.


  • HDMI 1.4b compliant for sink side application
  • Operation up to 3.4 Gbps per lane
  • Support up to 48-bit per pixel Deep Color
  • Fast switching between two TMDS input ports
  • Programmable equalizer, emphasis and amplitude settings to achieve optimized TMDS signal integrity
  • Each input can be AC coupled or DC coupled, while the output will maintain TMDS compliance DC coupled, current steering signals
  • Idle clock detection function for output squelch and auto standby
  • Integrated ARC (Audio Return Channel) and DDC Mux
  • Integrated ESD protection on I/O pins to connector
  • 3.3V single power supply
  • 8 KV contact per IEC61000-4-2, level 4, 8 KV HBM
  • Industrial temperature coverage
  • Packaging (Pb-free & Green):
    - 48-contact LQFP (FB48)


  • Notebook computers, Set Top Box
  • A/V Home Entertainment Systems
  • Dongle and Switches

Product Specifications

Product Parameters

Channels/In 8
Channels/Out 4
Inputs DP++,HDMI
Ports/In 2
Outputs HDMI
Ports/Out 1
Speed (Gbps) 3.4
Power Supply 3.3
Type Active Switch

Technical Documents

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 /
Contact Sales
Request Samples
Qty. Carrier
PI3HDX621FBE Active L-QFP7070-48 GREEN 250 TRAY


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 615 12/5/2022 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 173 12/5/2022 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
PI3HDX621FBEX Active L-QFP7070-48 TPGP 2000 T&R Contact Sales 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