Texas Instruments LM193AJRLQMLV

Overview

LM193AJRLQMLV 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, and rail-to-rail input common-mode range including ground - designed for space-grade analog signal conditioning in single-supply systems up to 36 VDC.

For engineers reviewing the LM193AJRLQMLV datasheet, LM193AJRLQMLV pinout, LM193AJRLQMLV application, or LM193AJRLQMLV equivalent, this QML-V qualified device supports critical timing, threshold detection, and logic interfacing in radiation-exposed environments where supply flexibility, low drift, and TTL/CMOS compatibility are mandatory.

Technical Context

The LM193AJRLQMLV implements two independent high-gain comparators with PNP input stages enabling ground-sensing operation on single supplies. Its uncommitted NPN open-collector outputs support wired-OR logic and flexible pull-up to any voltage ≤36 VDC within the supply range.

Qualified per MIL-STD-883, Method 5005 Group A, it delivers guaranteed performance across −55°C to +125°C and withstands 100 krad(Si) total ionizing dose (TID) with ELDRS-free behavior - verified via wafer-level low-dose-rate testing per Method 1019 Condition D.

Key Specifications

Pinout & Package

LM193AJRLQMLV is packaged in an 8-pin Ceramic Dual-In-Line Package (CDIP), designated NAB, with hermetic sealing and lead finish suitable for high-reliability military and space applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM193AJRLQMLV, LM193AHRLQMLV offers superior thermal performance in forced-air environments but requires different PCB footprint and mounting hardware, while LM193AJRQMLV reduces cost and documentation overhead at the expense of full QML-V traceability and extreme-temperature dynamic validation.

Availability

LM193AJRLQMLV is available at Aetrix Electronics and suitable for spacecraft power sequencing, radiation-hardened telemetry interfaces, and high-reliability analog threshold detection requiring stable component supply across extended product lifecycles.

Supply support for LM193AJRLQMLV 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 and defense components.

The LM193 series was developed to deliver precision, low-power, radiation-tolerant comparison capability for spaceborne instrumentation, power management, and fault-monitoring systems where single-supply operation and ground-referenced sensing are essential.

FAQ

What is the maximum total ionizing dose (TID) rating for LM193AJRLQMLV?

The LM193AJRLQMLV is qualified to 100 krad(Si) total ionizing dose per MIL-STD-883 Method 1019, with ELDRS-free behavior confirmed via wafer-level low-dose-rate testing. This rating applies across the full operating temperature range and is documented in the device's QML-V conformance report - a key requirement for geosynchronous and interplanetary missions where cumulative radiation exposure is significant. The LM193AJRLQMLV maintains functional integrity and specified electrical parameters post-irradiation.

Does LM193AJRLQMLV support true single-supply operation with inputs referenced to ground?

Yes, LM193AJRLQMLV supports true single-supply operation with its input common-mode voltage range extending to ground (0 V). This is enabled by its PNP input stage architecture, allowing direct connection of sensors, shunts, or reference dividers to ground without level-shifting circuitry. The specification guarantees operation from VCM = 0 V up to 28.5 V at 30 V supply - making it ideal for battery monitoring, power rail supervision, and grounded-signal conditioning in spacecraft subsystems.

What package type and pin count does LM193AJRLQMLV use?

LM193AJRLQMLV uses an 8-pin Ceramic Dual-In-Line Package (CDIP), designated NAB per TI's packaging nomenclature. It features a hermetically sealed ceramic body with tin-lead leads, rated for operation from −55°C to +125°C, and is supplied in tubes of 40 units. This package meets MIL-STD-883 mechanical and environmental requirements for spaceflight applications and is distinct from plastic SOIC or TO-99 variants in thermal, hermeticity, and mounting characteristics.

Can LM193AJRLQMLV outputs interface directly with TTL and CMOS logic families?

Yes, LM193AJRLQMLV outputs are open-collector NPN transistors compatible with TTL, DTL, ECL, MOS, and CMOS logic systems. When pulled up to 5 V, the output saturation voltage remains ≤250 mV at 4 mA sink current - well below the 0.8 V VIH threshold for standard TTL and the 1.5 V threshold for 3.3 V CMOS. This allows direct, robust interfacing without level translators or additional buffering, reducing component count in radiation-sensitive digital subsystems.

How does the input offset voltage of LM193AJRLQMLV compare to commercial-grade LM193A?

LM193AJRLQMLV specifies ±2.0 mV maximum input offset voltage at +25°C, tighter than the commercial LM193A's ±4.0 mV max under identical conditions. This improvement stems from enhanced process control and screening in the QML-V flow, directly supporting higher-accuracy threshold detection in telemetry and fault-monitoring circuits. Drift over temperature is also reduced: ±1.0 mV max ΔVIO from −55°C to +125°C, versus ±4.0 mV for standard LM193A - critical for unattended long-duration missions.