TMUXHS4612RETT

Overview

The TMUXHS4612RETT is a high-speed bidirectional passive multiplexer/demultiplexer IC manufactured by Texas Instruments. It features six differential channels supporting data rates up to 20Gbps, suitable for HDMI 2.1 (up to 12Gbps) and DisplayPort 2.1 (UHBR20). The device operates on a single 3.3V supply with an active current of 800µA and standby current of 32µA. Key electrical parameters include a typical on-resistance of 8.8Ω, a -3dB differential bandwidth of 13GHz, and propagation delay of 60ps. It utilizes a 40-pin WQFN package (3mm x 6mm) and supports an industrial temperature range from -40°C to 125°C.

Feature Summary

• Protocol-agnostic design supporting high-speed interfaces like HDMI 2.1 and USB4.
• Integrated charge-pump technology enables low on-state resistance across wide common-mode voltage ranges.
• Sideband channels provide 5V tolerance for signals such as DDC, AUX, and HPD.
• IOFF protection prevents back-powering and leakage when the supply rail collapses.

Applications

• PC and notebook internal/external display switching
• Gaming consoles, home theater systems, and televisions
• Data center and enterprise computing infrastructure
• Medical equipment and test/measurement instruments

Procurement Notes

Verify the specific suffix 'RETT' corresponds to the required tape-and-reel packaging configuration. Confirm that the industrial temperature grade (-40°C to 125°C) aligns with your system's environmental requirements. Ensure ESD handling protocols are followed during assembly due to the sensitivity of high-speed CMOS inputs.

Selection Notes

Select this component when designing systems requiring 2:1 or 1:2 mux/demux functionality for differential signals up to 20Gbps. It is appropriate for applications needing simultaneous switching of high-speed data and sideband control lines. Consider the 40-pin WQFN footprint and thermal pad requirements for PCB layout optimization.

Part Context

This part belongs to the TMUXHS4612 family of high-speed analog switches. The 'I' designation indicates the industrial temperature range variant, while 'RETT' specifies the reel packaging format. It serves as a generic solution for routing multiple video sources to a single sink or vice versa in modern multimedia electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Texas Instruments directly for pin-compatible alternatives or updated product recommendations if this specific package or temperature grade is unavailable.

FAQ

What is the maximum data rate supported by the TMUXHS4612?

The device supports data rates up to 20Gbps, making it suitable for DisplayPort UHBR20 and USB4 applications.

Can the sideband pins handle 5V signals?

Yes, all sideband channels (DDC_AUX, HPD) are 5V tolerant and can pass-through signals up to 5V levels.

How does the device behave when VCC is 0V?

The IOFF protection feature ensures that no current leaks from the I/O pins into the supply rail when VCC is 0V, preventing back-powering.