DS99R421ISQX/NOPB

Overview

The DS99R421ISQX/NOPB is a serializer manufactured by Texas Instruments, designed for high-speed data transmission applications. It operates within the FPD-Link II ecosystem, converting parallel LVDS inputs into a serial CML output stream. The device supports a maximum data rate of 1.03 Gbps and features four differential LVDS input channels paired with a single CML output channel. It functions on a supply voltage range of 3.0 V to 3.6 V and is rated for an industrial operating temperature range from -40°C to +105°C. The component is housed in a compact 36-WQFN package with a 6x6 mm footprint, suitable for surface-mount assembly.

Feature Summary

• Converts parallel LVDS signals to serial FPD-Link II format
• Supports embedded clocking for DC-balanced transmission
• Automotive-grade qualification compliant with AEC-Q100 standards

Applications

• Automotive camera interface systems
• In-vehicle display link connections
• ADAS sensor data serialization

Procurement Notes

Verify the specific suffix 'IS' indicates the extended industrial temperature grade (-40°C to +105°C) compared to standard commercial variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD protection measures are implemented during handling due to moisture sensitivity classification. Validate that the 36-WQFN thermal pad requirements match the target PCB layout specifications.

Selection Notes

Select this component when interfacing parallel LVDS sources with FPD-Link II receivers requiring automotive reliability. The 1.03 Gbps throughput accommodates standard video resolutions without excessive bandwidth overhead. Consider the 36-pin WQFN package constraints for board space limitations. Verify compatibility with downstream deserializers such as the DS90UR series for complete link functionality.

Part Context

This part belongs to the DS99R421 family of serializers, specifically tailored for FPD-Link II applications. It serves as a bridge between parallel interface logic and serial transmission lines. The 'IS' designation distinguishes it from commercial grade parts by extending the operational temperature range. It complements deserializers in the same product line to form bidirectional communication links.

Replacement Considerations

The DS99R421QSQX/NOPB is documented as a parameter-equivalent alternative. Verify if the Q-series qualification meets specific project requirements. No other direct substitutes are confirmed in available public records.