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Texas Instruments LM193AJ-QMLV
- Part No.:
- LM193AJ-QMLV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM193AJ-QMLV.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
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Product details
Overview
LM193AJ-QMLV 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 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 precision limit detection and zero-crossing circuits in space-grade power monitoring systems.
For engineers reviewing the LM193AJ-QMLV datasheet, LM193AJ-QMLV pinout, LM193AJ-QMLV application, or LM193AJ-QMLV equivalent, this page delivers verified radiation-tolerant comparator specifications, CDIP-8 package details, MIL-STD-883 qualified test data, and direct alternatives for high-reliability analog signal conditioning in avionics and satellite subsystems.
Technical Context
The LM193AJ-QMLV implements two independent, high-gain comparators with PNP input stages enabling ground-sensing capability on single supplies. Its bias network ensures supply-current independence across 2.0–36 VDC, and its uncommitted NPN output transistors support wired-OR logic and flexible pull-up configurations up to 36 V.
Qualified per MIL-STD-883 Method 5005 Group A, it delivers 100 krad(Si) total ionizing dose (TID) tolerance and ELDRS-free performance at −55°C to +125°C. Post-radiation AC response remains stable at ≤1.0 µs for 50 mV overdrive, preserving timing-critical comparator functions in orbital environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max ±2.0 mV at +V = 30 V - enables accurate threshold detection within 2 mV error margin at full supply range. |
| Supply Current | 0.4 mA typical at +V = 5 V - supports ultra-low-power operation in battery-backed or energy-constrained spacecraft subsystems. |
| Supply Voltage Range | 2.0 VDC to 36 VDC single supply (±1.0 V to ±18 V dual) - allows direct interface with legacy 5 V, 12 V, 28 V, and 36 V aerospace bus voltages. |
| Input Common-Mode Range | Includes ground (0 V) - permits direct sensing of signals referenced to system ground without level-shifting circuitry. |
| Output Saturation Voltage | 0.4 V max at 4 mA sink - ensures robust low-side switching into TTL/CMOS loads with minimal voltage drop. |
| Response Time | 0.8 µs at 50 mV overdrive - meets timing requirements for pulse-width monitoring and fast edge-detection in telemetry interfaces. |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - certified for long-duration missions in medium Earth orbit (MEO) and geosynchronous (GEO) radiation environments. |
Pinout & Package
LM193AJ-QMLV is housed 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 stability, thermal reliability, and radiation hardness required for space applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Open-collector NPN output - requires external pull-up; sinks up to 6 mA; compatible with TTL, CMOS, ECL, and MOS logic families. |
| 2 | Inverting Input A | High-impedance PNP input - accepts voltages from −0.3 V to +36 V; supports differential inputs exceeding supply rails. |
| 3 | Non-Inverting Input A | High-impedance PNP input - identical voltage range and bias characteristics as Pin 2; enables precision reference comparison. |
| 4 | V− / GND | Negative supply or ground reference - common return for both comparators; supports single-supply operation with ground-referenced inputs. |
| 5 | Non-Inverting Input B | Independent high-impedance input - electrically isolated from Channel A; enables dual-threshold or window-comparator topologies. |
| 6 | Inverting Input B | Independent high-impedance input - matches Pin 2 electrical specs; allows fully decoupled dual-channel signal conditioning. |
| 7 | V+ | Positive supply rail - accepts 2.0–36 VDC; bias current independent of voltage magnitude ensures stable operation across wide input ranges. |
| 8 | Output B | Open-collector NPN output - functionally identical to Pin 1; supports independent or wired-OR output configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Common-mode range includes 0 V on single supply - eliminates need for negative rail or level-shifters in ground-referenced sensor interfaces. |
| Low input bias current | ±1.0 nA typical at 25°C - minimizes loading error in high-impedance voltage divider and thermistor networks. |
| Wide supply flexibility | Operates from 2.0 VDC to 36 VDC single supply or ±1.0 V to ±18 V dual - interoperable with diverse spacecraft power architectures without regulation. |
| Open-collector outputs | Uncommitted NPN collectors - enable wired-OR logic, multi-source interrupt aggregation, and pull-up to any compatible logic rail up to 36 V. |
| MIL-STD-883 Group A qualification | Full temperature cycling (−55°C/+125°C), dynamic/functional testing, and settling time validation - ensures functional integrity under launch vibration and orbital thermal stress. |
Applications
| Power Supply Monitoring | Satellite Telemetry Threshold Detection |
|---|---|
Use Scenario: Real-time monitoring of primary bus voltage (28 VDC) and backup battery (3.3 VDC) in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Dual comparator performs undervoltage lockout (UVLO) and overvoltage protection (OVP) with independent thresholds per channel. Use Value: 2.0 mV offset ensures <±0.01% threshold error at 28 V; open-collector outputs directly drive fault latches and reset controllers without level translation. | Use Scenario: Detecting valid analog telemetry signal presence (e.g., solar array current feedback) before digitization in command & data handling (C&DH) subsystems. IC Role / Device Role / Timing Role: Precision zero-crossing detector and amplitude window comparator for analog sensor health verification. Use Value: Ground-inclusive input range allows direct connection to unbuffered sensor outputs; 0.8 µs response ensures sub-microsecond event capture during burst telemetry windows. |
| Radiation-Hardened Motor Control Feedback | Avionics Analog-to-Digital Interface Conditioning |
Use Scenario: Monitoring Hall-effect encoder signals and current-sense amplifier outputs in reaction wheel motor drivers aboard deep-space probes. IC Role / Device Role / Timing Role: High-speed, radiation-tolerant signal conditioning stage converting analog feedback into clean digital enable/disable flags. Use Value: 100 krad(Si) TID rating guarantees >10-year mission life in Jupiter radiation belts; 0.4 mA supply current minimizes thermal load in sealed actuators. | Use Scenario: Level-shifting and noise-immune threshold comparison for analog sensor inputs (e.g., pressure, temperature) feeding ADCs in flight control computers. IC Role / Device Role / Timing Role: Input signal conditioner providing hysteresis-enabled digital-ready signals to microcontroller GPIOs or dedicated ADC trigger inputs. Use Value: Low input bias current (<1 nA) prevents drift in high-R sensor bridges; CMRR ≥60 dB rejects common-mode noise from shared aircraft power grounds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM193AJ/883 | Same CDIP-8 package and electrical specs, but qualified to MIL-PRF-38535 Class V (not QML-V); lacks ELDRS-free certification and 100 krad(Si) post-irradiation validation. | Approved for military ground/airborne platforms where radiation exposure is negligible; not authorized for orbital use. | Select LM193AJ/883 only when full space qualification is unnecessary and cost sensitivity outweighs radiation assurance. |
| LM193AH/883 | TO-99 metal-can package (8-pin), identical comparator core, but higher thermal resistance (θJA = 174°C/W vs. CDIP's 146°C/W) and no QML-V radiation test documentation. | Suitable for lab prototypes and non-flight hardware requiring hermetic sealing but not space radiation compliance. | Choose LM193AH/883 for bench validation or ground-test fixtures where package form factor or thermal mass matters more than flight certification. |
Compared with LM193AJ/883 and LM193AH/883, the LM193AJ-QMLV uniquely delivers documented ELDRS-free behavior, full 100 krad(Si) TID margin with post-irradiation AC/DC validation, and QML-V process flow traceability-making it the sole option for mission-critical spaceflight comparator functions requiring guaranteed radiation survivability.
Availability
LM193AJ-QMLV is available at Aetrix Electronics and suitable for power supply monitoring, satellite telemetry threshold detection, radiation-hardened motor control feedback, and avionics analog-to-digital interface conditioning requiring stable component supply across extended production lifecycles.
Supply support for LM193AJ-QMLV 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 LM193QML product line was developed specifically for defense and space applications requiring radiation tolerance, extended temperature operation, and MIL-STD-883 qualification-targeting precision analog signal conditioning in mission-critical avionics and satellite subsystems.
FAQ
What radiation qualification level does the LM193AJ-QMLV meet?
The LM193AJ-QMLV is qualified per MIL-PRF-38535 QML-V standards with full Group A testing (MIL-STD-883 Method 5005), 100 krad(Si) total ionizing dose tolerance, and verified ELDRS-free performance. All radiation test data-including pre- and post-irradiation DC/AC parameters at −55°C, 25°C, and +125°C-is documented in the official TI SNOSAM2C datasheet revision March 2013.
Does the LM193AJ-QMLV support single-supply operation with inputs referenced to ground?
Yes, the LM193AJ-QMLV supports true single-supply operation with input common-mode voltage range extending to ground (0 V). This is enabled by its PNP input stage architecture, allowing direct connection of sensors or reference voltages referenced to system ground without level-shifting circuitry-critical for low-side current sensing and battery voltage monitoring in spacecraft power systems.
What is the maximum allowable differential input voltage for the LM193AJ-QMLV?
The LM193AJ-QMLV allows differential input voltage up to ±36 V, with absolute input voltage limits of −0.3 V to +36 V per pin. As stated in the datasheet, positive excursions beyond V+ are permissible if the opposing input remains within the common-mode range; however, input voltages below −0.3 V must be clamped to prevent parasitic transistor activation and output state corruption.
Can the outputs of the LM193AJ-QMLV be wired together for OR logic?
Yes, both outputs of the LM193AJ-QMLV are open-collector NPN transistors and can be safely wired together (wired-OR configuration) with a single external pull-up resistor. This is explicitly supported in the datasheet and commonly used in fault-bus architectures-for example, aggregating undervoltage, overtemperature, and overcurrent comparator outputs into one system-fault interrupt line in satellite power management units.
What package type and marking does the LM193AJ-QMLV use?
The LM193AJ-QMLV uses an 8-pin Ceramic Dual In-line Package (CDIP) with package code NAB. Its part marking is "LM193AJ-QMLV", laser-etched on the ceramic body. Per TI's Package Option Addendum, it ships in tubes of 40 units and is rated for −55°C to +125°C operating temperature with non-RoHS (lead-based) finish and no MSL rating due to hermetic ceramic construction.
LM193AJ-QMLV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 1000pA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- 60dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 700ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-CDIP
LM193AJ-QMLV FAQ
1.How can I place an order for LM193AJ-QMLV through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193AJ-QMLV on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM193AJ-QMLV reliable?
The price and inventory of LM193AJ-QMLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193AJ-QMLV is usually 5 days.
3.What payment methods are accepted for LM193AJ-QMLV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM193AJ-QMLV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM193AJ-QMLV?
LM193AJ-QMLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193AJ-QMLV order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM193AJ-QMLV?
For technical support, including LM193AJ-QMLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193AJ-QMLV requirements.
6.How does Aetrix verify that LM193AJ-QMLV is sourced from the original manufacturer or authorized distributors?
All LM193AJ-QMLV products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM193AJ-QMLV meets industry standards.
7.What is the process for return or replacement of LM193AJ-QMLV?
All LM193AJ-QMLV units undergo pre-shipment inspection (PSI). If there is an issue with LM193AJ-QMLV, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM193AJ-QMLV part is unused and in its original packaging.
Return procedure for LM193AJ-QMLV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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