Texas Instruments DS90C031WRQMLV

Overview

DS90C031WRQMLV from Texas Instruments is a radiation-hardened quad CMOS LVDS differential line driver designed for high-speed point-to-point interfaces in aerospace and defense systems. It accepts TTL/CMOS inputs, delivers ±350 mV differential output swing into 100 Ω, supports TRI-STATE control via dual enable pins (EN/EN*), operates from −55°C to +125°C, and dissipates only 11 mW in disabled state.

For engineers reviewing the DS90C031WRQMLV datasheet, DS90C031WRQMLV pinout, DS90C031WRQMLV application, or DS90C031WRQMLV equivalent, key selection criteria include radiation tolerance (100 krad(Si)), low differential skew (≤3.0 ns), fail-safe floating-input logic, power-off high-impedance outputs, and compatibility with IEEE 1596.3 and TIA LVDS standards.

Technical Context

The DS90C031WRQMLV implements a current-mode LVDS driver architecture with fixed 3.4 mA loop current, delivering 340 mV differential voltage across 100 Ω termination. Its dual enable structure (EN active-high, EN* active-low, OR-ed) enables robust bus arbitration in multi-driver configurations.

It features fail-safe input logic that guarantees defined output states when inputs float, and power-off high-impedance outputs prevent bus loading when VCC is absent-critical for hot-swap and redundancy applications in avionics and satellite subsystems.

Key Specifications

Pinout & Package

DS90C031WRQMLV is packaged in a 16-pin Ceramic Flatpack (CFP, NAD0016A), hermetically sealed for high-reliability operation in extreme thermal and radiation environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS driver applications.

Compared with DS90C031E-QML, DS90C031WRQMLV offers smaller CFP footprint and lower thermal resistance (θJC = 14°C/W), while SN65LVDS048A-SP trades radiation assurance for integration - making DS90C031WRQMLV the sole choice for certified Class V or Class Y space applications requiring full QML-V traceability.

Availability

DS90C031WRQMLV is available at Aetrix Electronics and suitable for avionics data buses, satellite telemetry links, redundant flight control networks, and nuclear reactor monitoring systems requiring stable component supply across extended product lifecycles.

Supply support for DS90C031WRQMLV includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability technologies for aerospace, defense, and industrial markets.

The DS90C031WRQMLV belongs to TI's QML-V radiation-hardened interface portfolio, engineered specifically for deterministic, low-skew LVDS signaling in mission-critical platforms where failure is not an option.

FAQ

What is the radiation hardness specification for DS90C031WRQMLV?

The DS90C031WRQMLV is radiation-hardened to 100 krad(Si) total ionizing dose (TID), qualified per MIL-STD-883 Method 1019.7 Condition A. It also demonstrates single-event latch-up (SEL) immunity up to 103 MeV·cm²/mg. These ratings are verified through wafer-level testing and documented in the official TI QML-V certification report for DS90C031WRQMLV.

Does DS90C031WRQMLV support hot-swap or power-off bus isolation?

Yes, DS90C031WRQMLV provides true power-off high-impedance LVDS outputs. When VCC is removed or unpowered, the DO+/DO− terminals enter a high-Z state, preventing loading of the differential bus. This feature is explicitly validated in the datasheet and enables safe insertion/removal in redundant avionics backplanes without disrupting adjacent nodes.

What is the meaning of the dual enable pins (EN and EN*) on DS90C031WRQMLV?

The EN (active-high) and EN* (active-low) pins on DS90C031WRQMLV are internally OR-ed, allowing either signal to independently disable all four drivers. This dual-enable architecture supports flexible control logic - e.g., one pin driven by FPGA GPIO, the other tied to system reset - enhancing fault tolerance in safety-critical DS90C031WRQMLV deployments.

Can DS90C031WRQMLV drive standard 100 Ω LVDS receivers like DS90C032?

Yes, DS90C031WRQMLV is fully compatible with the companion DS90C032 LVDS receiver and meets IEEE 1596.3 and proposed TIA LVDS standards. Its 340 mV typical differential output voltage into 100 Ω termination delivers ≥240 mV noise margin at the receiver input, ensuring robust interoperability in point-to-point links specified in the DS90C031WRQMLV application notes.

What package type and pin count does DS90C031WRQMLV use?

DS90C031WRQMLV uses a 16-pin Ceramic Flatpack (CFP) package designated NAD0016A. This hermetic, leadless ceramic package is optimized for high-reliability military and space applications, with dimensions of 10.414 mm × 6.35 mm × 2.33 mm max height and JEDEC-compliant land pattern requirements.