DS90C031W-QMLV

Overview

The DS90C031W-QMLV 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 swing of 350 mV. The device operates on a +4.5 V to +5.5 V supply, dissipating 25 mA when enabled and 10 mA in the disabled state. It guarantees immunity to 100 krad(Si) total ionizing dose and features fail-safe logic for floating inputs. Differential propagation delay ranges from 0.5 ns to 5.0 ns, with skew limited to 3.0 ns.

Feature Summary

• Radiation guaranteed to withstand 100 krad(Si) total ionizing dose
• High-impedance LVDS outputs that minimize bus loading during power-off conditions
• TRI-STATE function enables ultra-low idle power dissipation
• Fail-safe logic ensures defined output states for floating inputs

Applications

• Military and defense applications requiring radiation tolerance
• Space-based systems utilizing ceramic packaging
• High-speed point-to-point interface circuits replacing pseudo-ECL devices

Procurement Notes

Verify the specific ordering suffix (e.g., WGRQMLV versus WRQMLV) against the Package Option Addendum to confirm the exact package type and carrier configuration. Ensure the procurement documentation explicitly references MIL-STD-883 qualification standards and wafer-level TID data availability for the intended radiation environment.

Selection Notes

Select this component when radiation hardness is mandatory for the application environment. Confirm that the system operates within the recommended +4.5 V to +5.5 V supply range. Verify that the required thermal dissipation capabilities align with the package's thermal resistance ratings, particularly if operating at elevated temperatures up to +125°C.

Part Context

This part belongs to the DS90C031QML family, which includes variants such as the DS90C031E-QML and DS90C031QML-SP. These components are qualified versions of standard LVDS drivers specifically engineered for harsh environments. They serve as direct replacements for legacy high-power pseudo-ECL drivers while maintaining pin compatibility with industry-standard RS-422 devices like the DS26C31.

Replacement Considerations

Direct functional equivalents include the DS90LV031AQML and DS90C032QML receiver. For non-radiation-hardened commercial applications, the DS90C031 or DS90LV031A series may be considered, provided radiation requirements are not present.