DS90C031WRQMLV

Overview

The DS90C031WRQMLV is a radiation-hardened quad CMOS differential line driver designed for high-speed point-to-point interfaces. It accepts TTL/CMOS inputs and converts them to low-voltage differential signals with a typical output of 350 mV. The device operates on a single +5V supply (4.5V to 5.5V) and features a TRI-STATE function for power reduction. It guarantees immunity to 100 krad(Si) total ionizing dose and includes fail-safe logic for floating inputs. The component utilizes a 16-pin Ceramic Flatpack (CFP, NAD) package.

Feature Summary

• Radiation guaranteed up to 100 krad(Si) for space and defense applications
• High impedance LVDS outputs ensure minimal bus loading during power-off states
• Pin-compatible replacement for industry standard pseudo-ECL devices like the DS26C31

Applications

• Military and defense avionics systems requiring radiation tolerance
• Space-based satellite communication and telemetry interfaces
• High-speed point-to-point data links in harsh environments

Procurement Notes

Verify that the specific ordering suffix matches the required military or space qualification standards. Confirm the ceramic flatpack package type aligns with your PCB footprint requirements. Ensure the procurement channel provides necessary lot traceability and wafer-level TID data documentation as specified by the manufacturer's quality conformance inspection protocols.

Selection Notes

Select this component when radiation hardness is mandatory for the target environment. It serves as a direct drop-in replacement for legacy RS-422 drivers such as the 26LS31 or DS26C31. Consider the CFP package constraints regarding thermal dissipation and soldering profiles compared to standard plastic packages.

Part Context

This part belongs to the DS90C031QML family of low voltage differential signaling (LVDS) drivers. It is specifically qualified under Texas Instruments' QML (Qualified Military List) program. The series provides a modern, low-power alternative to older pseudo-ECL technologies while maintaining compatibility with established interface standards.

Replacement Considerations

The datasheet explicitly identifies the DS26C31 as a pin-compatible predecessor. Designers replacing legacy pseudo-ECL drivers should verify that the system termination resistance matches the 100Ω requirement for proper signal integrity.