DS90C031E-QML

Overview

The DS90C031E-QML is a 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 signaling (LVDS) with a typical output voltage of 350 mV. The device operates on a +5V supply, consuming 25 mA when enabled and dropping to 10 mA in the disabled state. It guarantees radiation hardness up to 100 krad(Si) and supports an operating temperature range from -55°C to +125°C. Key electrical parameters include a propagation delay of 0.5 ns to 5.0 ns and channel skew of 3.0 ns.

Feature Summary

• Radiation guaranteed performance up to 100 krad(Si)
• High impedance LVDS outputs during power-off conditions
• Fail-safe logic design for floating inputs
• Pin-compatible replacement for legacy pseudo-ECL drivers

Applications

• High-speed point-to-point interface applications
• Military and defense electronic systems
• Space-based avionics and communication equipment
• Replacement for high-power pseudo-ECL devices

Procurement Notes

Verify the specific ordering suffix against the Package Option Addendum to confirm the exact package type, such as LCCC or CFP, and material specifications. Ensure that the requested part number matches the active production status listed by Texas Instruments. Confirm radiation qualification requirements align with the MIL-STD-883 testing methods specified in the datasheet before finalizing procurement orders.

Selection Notes

Select this component when radiation tolerance and low power consumption are critical constraints. It serves as a direct pin-compatible upgrade for designs currently using the DS26C31 or standard 26LS31 drivers. Verify that the system requires balanced current-mode termination and that the input logic levels match the specified TTL/CMOS compatibility thresholds.

Part Context

This device belongs to the DS90C03x family of LVDS line drivers. It is specifically qualified under the QML (Military) standard, distinguishing it from commercial variants. The component functions as the transmitter counterpart to the DS90C032 receiver, forming a complete differential signaling solution for robust data transmission in harsh environments.

Replacement Considerations

The datasheet explicitly states pin compatibility with the DS26C31. Designers replacing legacy pseudo-ECL drivers should verify that the new termination resistance matches the 100Ω requirement for LVDS current-mode operation.