DS99R421QSQ/NOPB

Overview

The DS99R421QSQ/NOPB is a serializer designed for FPD-Link applications, manufactured by Texas Instruments. It converts three data channels and one clock channel from FPD-Link LVDS format into an embedded clock DC-balanced FPD-Link II LVDS output. The device supports data rates ranging from 5 MHz to 43 MHz per channel, with a total aggregate throughput of 1.03 Gbps. It operates within a supply voltage range of 3 V to 3.6 V and functions reliably across an extended industrial temperature range of -40°C to +105°C. The component is housed in a compact 36-WQFN package measuring 6x6 mm.

Feature Summary

• Converts standard FPD-Link LVDS inputs (three data plus one clock) to FPD-Link II LVDS outputs with embedded clocking
• Ensures signal integrity through DC-balanced encoding suitable for long cable runs
• Complies with AEC-Q100 automotive qualification standards for reliability

Applications

• Automotive camera systems requiring high-speed video transmission
• In-vehicle infotainment displays connected to processing units
• ADAS sensor interfaces utilizing FPD-Link architecture

Procurement Notes

Verify the specific suffix QSQ against the required automotive grade specifications. Confirm the NOPB designation indicates lead-free and RoHS compliance. Check current availability status as production cycles may vary. Ensure the 36-WQFN package footprint matches the PCB layout requirements before ordering.

Selection Notes

Select this component when interfacing FPD-Link sources with FPD-Link II receivers. Verify that the input clock frequency falls within the 5 MHz to 43 MHz operational window. Ensure the system power supply remains stable between 3 V and 3.6 V. Consider the thermal dissipation capabilities of the WQFN package in the final enclosure design.

Part Context

This part belongs to the DS99R421 family of serializers from Texas Instruments. It serves as a bridge between legacy FPD-Link devices and newer FPD-Link II compatible deserializers. The QSQ variant specifically denotes automotive-grade qualification, distinguishing it from commercial or industrial-only versions like the ISQ series.

Replacement Considerations

The DS99R421QSQX/NOPB is a parameter-equivalent alternative with an X suffix indicating reel packaging. Other variants such as DS99R421ISQ/NOPB share functional similarities but differ in qualification grades. Verify pin compatibility and electrical parameters before substituting.