DS90UB921TRHSRQ1

Overview

The DS90UB921TRHSRQ1 is an automotive-grade FPD-Link III serializer manufactured by Texas Instruments. It converts parallel RGB video data into a high-speed serial stream for transmission over a single pair of shielded twisted-pair cables or coaxial cables. The device supports pixel clock frequencies ranging from 5 MHz to 96 MHz, accommodating resolutions up to 1080p. It integrates a bidirectional control channel (BCC) that enables I2C communication from the serializer to downstream deserializers, facilitating remote configuration and status monitoring. The component operates within a temperature range of -40°C to +105°C and is housed in a WQFN-48 package.

Feature Summary

• Integrates a bidirectional control channel (BCC) to enable I2C communication from the host processor to downstream devices via the same cable used for video data.
• Supports high-definition video transmission with pixel clock frequencies up to 96 MHz, suitable for 720p and 1080p displays.
• Includes integrated EMI filtering capabilities to reduce electromagnetic interference generated during high-speed serial transmission.

Applications

• Automotive instrument cluster display interfaces
• Center console infotainment screen connections
• Rear-seat entertainment system video distribution

Procurement Notes

Verify the AEC-Q100 qualification status and specific suffix codes against official Texas Instruments documentation to ensure compliance with automotive reliability standards. Confirm the WQFN-48 package dimensions and moisture sensitivity level requirements prior to PCB layout and reflow soldering processes.

Selection Notes

Select this component when a serialized output is required to drive FPD-Link III compatible deserializers in automotive environments. Ensure the design supports the necessary differential signaling impedance and that the downstream deserializer matches the supported pixel clock frequency range of 5 MHz to 96 MHz.

Part Context

This part belongs to the DS90UB921 family of FPD-Link III serializers. It is designed specifically for automotive applications requiring reliable, long-distance video transmission with minimal cabling complexity. The Q1 suffix indicates automotive grade qualification, distinguishing it from commercial variants.

Replacement Considerations

Direct pin-to-pin replacements within the same FPD-Link III family should be verified against the latest TI compatibility matrix. Alternative serializers may require changes to the I2C addressing scheme or power supply configurations if they do not share identical electrical characteristics.

FAQ

What is the maximum pixel clock frequency supported by the DS90UB921?

The device supports pixel clock frequencies up to 96 MHz, which allows for the transmission of 1080p video signals.

How does the bidirectional control channel function?

The BCC allows the upstream host processor to send I2C commands and receive status information from downstream deserializers through the same serial link used for video data.

Is this component qualified for automotive use?

Yes, the DS90UB921TRHSRQ1 is AEC-Q100 qualified and operates within the extended automotive temperature range of -40°C to +105°C.