PI3HDMI1421ZHEX

Specialized Overview

The PI3HDMI1421ZHEX is a HDMI Revision 1.4 compliant 2:1/1:2 Mux/Demux manufactured by Diodes Incorporated, housed in a 42-contact TQFN package (9mm x 3.5mm). It supports signal throughput up to 3.4 Gbps per channel with a -3dB bandwidth of 3.7 GHz and an insertion loss of -1.8 dB at 3.4 Gbps. The device operates on a single 3.3 V power supply (3.0 V to 3.6 V) within an ambient temperature range of -40°C to +85°C. Electrical characteristics include an inter-pair skew of 20 ps, intra-pair skew of 10 ps, off-isolation of -29 dB at 3.4 Gbps, and crosstalk of -38 dB at 3.4 Gbps.

Specialized Feature Summary

• Supports bi-directional data traffic for both 2:1 multiplexing and 1:2 demultiplexing configurations
• Integrates HPD detection with automatic TMDS path turn-off when HPD is not present
• Provides integrated ESD protection rated at +/-4kV contact per IEC61000-4-2 standard

Specialized Applications

• HDMI Sink devices such as monitors or digital televisions
• PC motherboards and graphics cards
• Digital set-top boxes
• 1-to-2 DP & HDMI/DVI switch boxes
• DVD players and HDMI/DVI monitors

Specialized Procurement Notes

Verify the component authenticity through authorized Diodes Incorporated distributors or verified electronic component marketplaces. Confirm that the ordering suffix matches the ZHE designation for the 42-pin TQFN package. Ensure the procurement documentation includes RoHS compliance certificates and material declarations to meet environmental standards. Cross-reference the manufacturer part number against official datasheets to prevent counterfeit components.

Specialized Selection Notes

Select this component for designs requiring passive switching of HDMI signals up to 3.4 Gbps. The 42-pin TQFN package is suitable for space-constrained layouts where the 48-pin variant features are unnecessary. Ensure the design accommodates the specified 3.3 V supply voltage and utilizes appropriate decoupling capacitors near the VDD pins. Verify that the application does not require the integrated DP++ level shifter available only in the 48-pin version.

Specialized Part Context

This component belongs to the Pericom HDMI interface family, now managed under Diodes Incorporated following corporate acquisitions. It serves as a passive switching solution for high-speed video interfaces, specifically targeting HDMI 1.4 specifications. The device integrates DDC channels and HPD management into a compact footprint, distinguishing it from active retimers or equalizers used in higher-speed HDMI 2.0 or 2.1 applications.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided documentation.