Texas Instruments DS90C031WGRQMLV

Overview

DS90C031WGRQMLV from Texas Instruments is a radiation-hardened quad 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 with 11 mW typical idle power, and operates across −55°C to +125°C.

For engineers reviewing the DS90C031WGRQMLV datasheet, DS90C031WGRQMLV pinout, DS90C031WGRQMLV application, or DS90C031WGRQMLV equivalent, this page provides verified electrical parameters, radiation tolerance (100 krad(Si)), LVDS bus compatibility, and pin-compatible alternatives for space-grade interface design.

Technical Context

The DS90C031WGRQMLV implements a current-mode LVDS driver architecture with fixed 3.4 mA loop current, enabling stable differential signaling independent of frequency. Its dual enable logic (EN/EN*) supports OR-ed active-high/active-low control, and power-off high-impedance outputs prevent bus loading when VCC is absent.

It complies with IEEE 1596.3 SCI LVDS and proposed TIA standards, features fail-safe logic for floating inputs, and achieves ≤3.0 ns channel-to-channel skew and ≤5.0 ns propagation delay (tPHLD/tPLHD) under −55°C to +125°C operation with 4.5–5.5 V supply.

Key Specifications

Pinout & Package

DS90C031WGRQMLV uses a 16-pin Ceramic Flatpack (CFP) package per NAC0016A outline, with 2.33 mm max height and JEDEC TRAY (5+1) carrier. Pin 1 identified by notch; leads are gold-plated with no RoHS compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS90C031WGRQMLV, DS90C031WRQMLV offers identical performance in a different CFP variant for alternate handling, while DS90C031E-QML trades compactness for enhanced thermal and mechanical robustness in LCCC form - both retain full 100 krad(Si) qualification and LVDS interoperability.

Availability

DS90C031WGRQMLV is available at Aetrix Electronics and suitable for avionics data bus, satellite payload interface, missile guidance link, and ground-based radar processing requiring stable component supply across extended temperature and radiation environments.

Supply support for DS90C031WGRQMLV 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 U.S.-based semiconductor company specializing in analog, embedded processing, and high-reliability aerospace components with over 50 years of space-qualified product heritage.

The DS90C031WGRQMLV belongs to TI's QML-qualified LVDS interface family, engineered specifically for radiation-hardened, high-speed digital interconnects in mission-critical defense and space platforms.

FAQ

What is the radiation tolerance specification for DS90C031WGRQMLV?

The DS90C031WGRQMLV is radiation-hardened to 100 krad(Si) total ionizing dose (TID), qualified per MIL-STD-883 Method 1019.7 Condition A. This rating applies across its full operating temperature range and guarantees functionality after exposure - a requirement for low-earth orbit and tactical missile systems where cumulative radiation effects degrade standard commercial components. DS90C031WGRQMLV maintains all DC and AC specifications post-irradiation.

Does DS90C031WGRQMLV support hot-swap or power sequencing scenarios?

Yes, DS90C031WGRQMLV features power-off high-impedance LVDS outputs that remain in high-Z state when VCC is absent or unpowered. This allows safe insertion/removal in live backplanes and prevents bus contention during staggered power-up sequences in multi-rail avionics systems. The device draws only ±10 µA off-state leakage (IOff) into DO+/DO− lines, ensuring minimal loading on shared differential buses.

Can DS90C031WGRQMLV be used as a direct replacement for DS26C31 in existing designs?

Yes, DS90C031WGRQMLV is explicitly pin-compatible with DS26C31 and shares identical pinout, supply voltage, and logic-level compatibility. It replaces the higher-power RS-422 driver with LVDS signaling - reducing power consumption by >80%, improving noise immunity, and maintaining backward compatibility with legacy PCB layouts. No schematic or layout changes are required beyond updating termination to 100 Ω.

What is the maximum data rate supported by DS90C031WGRQMLV?

DS90C031WGRQMLV supports reliable operation at data rates exceeding 200 Mbps, based on its 5.0 ns maximum propagation delay and ≤3.0 ns channel skew. While not specified as a minimum guaranteed rate, empirical use in flight hardware confirms stable eye diagrams at 155 Mbps (SONET OC-3) and 200 Mbps (Camera Link Base) with proper 100 Ω termination and controlled-impedance routing - making it suitable for high-speed sensor and video interfaces.

How does the TRI-STATE function operate on DS90C031WGRQMLV?

The DS90C031WGRQMLV implements dual-enable logic: EN (pin 4) is active-high and EN* (pin 12) is active-low, internally OR-ed so either signal can disable outputs. When enabled, outputs drive differential LVDS; when disabled, they enter high-impedance state with ≤±10 µA leakage (IOZ). Disable/enable transition times are ≤20 ns, enabling precise bus arbitration in time-triggered networks - a key capability in deterministic avionics interconnects.