Texas Instruments LM193AJRQMLV

Overview

LM193AJRQMLV from Texas Instruments is a radiation-hardened, low-power, dual voltage comparator with 2.0 mV max input offset voltage, 0.4 mA supply current at 5 V, and operation from 2.0 VDC to 36 VDC single supply (±1.0 V to ±18 V dual). It features rail-to-rail input common-mode range including ground and TTL/CMOS-compatible open-collector outputs-used in space-grade limit detection, zero-crossing sensing, and precision timing circuits.

For engineers reviewing the LM193AJRQMLV datasheet, LM193AJRQMLV pinout, LM193AJRQMLV application, or LM193AJRQMLV equivalent, this page delivers verified radiation-tolerant comparator specifications, QMLV-qualified package details, MIL-STD-883 Group A/B test coverage, and direct alternatives for high-reliability analog signal conditioning in aerospace and defense systems.

Technical Context

The LM193AJRQMLV implements two independent PNP-input comparators with uncommitted NPN output transistors, enabling wired-OR logic and flexible pull-up configuration across supply domains. Its bias network delivers supply-independent current draw over 2.0–36 VDC, and input common-mode voltage extends to ground on single supply-enabling direct sensing of near-ground signals without level-shifting.

Designed for radiation environments, it meets 100 krad(Si) total ionizing dose (TID) and ELDRS-free performance per MIL-STD-883 Method 1019. Electrical parameters-including VIO drift ≤ ±1.0 mV post-irradiation and tRLH ≤ 1.0 µs at 50 mV overdrive-are validated across −55°C to +125°C operating temperature.

Key Specifications

Pinout & Package

LM193AJRQMLV is packaged in an 8-pin Ceramic Dual-In-Line Package (CDIP), designated NAB per TI's package numbering system. This hermetically sealed ceramic package provides mechanical robustness and radiation hardness essential for space applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator applications.

Compared with LM193AJ-QMLV and LM193AHRLQMLV, LM193AJRQMLV uniquely combines full −55°C to +125°C qualification, CDIP-8 surface-mount compatibility, and verified ELDRS-free performance-making it the only option qualified for both extreme thermal cycling and radiation-intensive LEO/MEO missions.

Availability

LM193AJRQMLV is available at Aetrix Electronics and suitable for spacecraft power monitoring, satellite thermal control, military radar threshold detection, and launch vehicle telemetry requiring stable component supply under extended lifecycle and radiation assurance.

Supply support for LM193AJRQMLV 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 and embedded processing technologies, with decades of heritage in high-reliability aerospace components.

The LM193 series was developed for radiation-tolerant analog signal conditioning in mission-critical systems-specifically targeting space, defense, and nuclear instrumentation where precision, longevity, and environmental resilience are non-negotiable.

FAQ

What radiation qualification level does LM193AJRQMLV meet?

LM193AJRQMLV is qualified to 100 krad(Si) total ionizing dose (TID) with ELDRS-free performance per MIL-STD-883 Method 1019. All electrical parameters-including input offset voltage drift (≤±1.0 mV) and response time-are verified pre- and post-irradiation across −55°C to +125°C. The LM193AJRQMLV part marking confirms full QMLV compliance, including Group B subgroup 5 delta testing.

Does LM193AJRQMLV support single-supply operation with ground-referenced inputs?

Yes, LM193AJRQMLV supports true single-supply operation with input common-mode voltage range extending to ground (0 V). This allows direct interfacing with sensors like current-sense resistors or thermocouple amplifiers without level-shifting circuitry. The PNP input stage enables this capability while maintaining 2.0 mV max offset and 0.4 mA supply current at 5 V.

What is the maximum supply voltage for LM193AJRQMLV, and how does it affect output drive?

LM193AJRQMLV operates from 2.0 VDC to 36 VDC on single supply (±1.0 V to ±18 V dual). Supply voltage does not affect bias current or input stage performance-but output saturation voltage (VSat ≤ 0.4 V at 4 mA) and sink current capability (ISink ≥ 4.0 mA) remain consistent across the full range. Pull-up voltage may be independently selected within the same 36 V limit.

Can outputs of LM193AJRQMLV be wired together for OR logic?

Yes, LM193AJRQMLV features uncommitted NPN collector outputs that support wired-OR functionality. Both Output A (Pin 1) and Output B (Pin 7) can be tied to a shared pull-up resistor and logic line. This enables compact window-comparator designs or fault-aggregation circuits without additional logic gates-maintaining radiation-hardened integrity across the signal path.

What package type and lead finish does LM193AJRQMLV use?

LM193AJRQMLV uses an 8-pin Ceramic Dual-In-Line Package (CDIP), package code NAB. It is hermetically sealed with a non-RoHS-compliant lead finish (TI specifies "Call TI" for exact composition). The package meets MIL-STD-883 mechanical and environmental requirements, including thermal shock, vibration, and internal visual inspection per Method 2015.