PI3HDX621FBE

Specialized Overview

The PI3HDX621FBE is an active 2:1 switch compliant with the HDMI 1.4b specification, designed for sink-side applications. It supports data rates up to 3.4 Gbps per lane and accommodates Deep Color depths up to 48 bits per pixel. The device features programmable equalization, emphasis, and amplitude settings to optimize TMDS signal integrity. It integrates an Audio Return Channel (ARC) driver and a DDC multiplexer. Operating on a single 3.3V supply, it provides 8 kV contact ESD protection per IEC61000-4-2 level 4 standards. The component operates within an industrial temperature range of -40°C to +85°C and is housed in a 48-contact LQFP package.

Specialized Feature Summary

• Active 2:1 switching capability with fast port selection via hardware pins
• Integrated ARC transmitter and DDC multiplexer for simplified system design
• Programmable input equalization and output pre-emphasis for signal restoration
• Idle clock detection enabling automatic output squelch and auto standby modes

Specialized Applications

• Notebook computers
• Set top boxes
• A/V home entertainment systems
• Dongles and switches

Specialized Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging type. The 'E' suffix indicates Pb-free and Green compliance. Confirm whether the component requires tape and reel or tube packaging based on the exact part number variant required for production. Ensure compatibility with standard surface mount assembly processes.

Specialized Selection Notes

Select this component for sink-side HDMI 1.4b applications requiring dual source switching. It is suitable for designs needing integrated ARC functionality without external transmitters. Consider the 48-pin LQFP footprint for PCB layout constraints. Verify that the 3.3V power supply meets the recommended operating conditions for optimal signal integrity and current consumption.

Specialized Part Context

This component belongs to the PI3HDX series of active HDMI switches manufactured by Diodes Incorporated, formerly Pericom Semiconductor. It serves as a direct successor to legacy models like the PI3HDMI621FBE, offering enhanced signal conditioning and integrated ARC capabilities. The device addresses the need for reliable high-speed video switching in consumer electronics while maintaining compliance with industry standards.

Specialized Replacement Considerations

The PI3HDMI621FBE is listed as a discontinued direct replacement for this component. Verify pin-to-pin compatibility and functional equivalence before substitution. Ensure that any alternative devices support the same HDMI 1.4b specifications and ARC integration requirements.

Specialized FAQ

How does the PI3HDX621FBE handle hot plug detect signals?

The device includes an HPD_SINK input pin with an internal 120kΩ pull-down resistor. When this pin is floating or tied to ground, the TMDS outputs shut down to sleep mode to reduce power dissipation.

What are the configurable output termination options?

The ROUT_S0 pin allows selection between double termination mode (when set to '1' or left open) and open drain output mode (when set to '0'). This flexibility supports different sink device requirements.

Can the inputs be AC coupled or DC coupled?

Yes, each TMDS input port can be configured for either AC coupling or DC coupling. The output maintains TMDS compliance with DC-coupled, current steering signals regardless of the input configuration.