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Texas Instruments LM193AHRQMLV
- Part No.:
- LM193AHRQMLV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- TO-99-8 Metal Can
- Datasheet:
-
LM193AHRQMLV.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE DUA
- Quantity:
- Payment:
- Shipping:
Inventory:4,613
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Product details
Overview
LM193AHRQMLV 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 - used in space-grade analog monitoring, fault detection, and precision threshold sensing in satellite power management systems.
For engineers reviewing the LM193AHRQMLV datasheet, LM193AHRQMLV pinout, LM193AHRQMLV application, or LM193AHRQMLV equivalent, this device delivers verified TID tolerance up to 100 krad(Si), ELDRS-free performance, ground-sensing capability on single supply, and TTL/CMOS-compatible open-collector outputs for high-reliability aerospace signal conditioning.
Technical Context
The LM193AHRQMLV integrates two independent high-gain comparators with PNP input stages enabling input common-mode voltage range extending to ground on single supply. Its uncommitted NPN output transistors support wired-OR logic and flexible pull-up to any rail within the 2–36 V range.
Designed per MIL-STD-883 Class B requirements, it undergoes full radiation qualification including Total Ionizing Dose (TID) testing at 100 krad(Si) and ELDRS-free validation under low-dose-rate conditions. Electrical parameters are guaranteed across −55°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±2.0 mV max - enables precise threshold detection without trimming in radiation-exposed environments |
| Supply Current | 0.4 mA typ at 5 V - supports long-duration battery or bus-powered operation in remote spacecraft subsystems |
| Supply Voltage Range | 2.0 VDC to 36 VDC single supply - eliminates need for dual rails in avionics power sequencing circuits |
| Input Common-Mode Range | Includes ground - allows direct sensing of low-side current shunts or battery cell voltages |
| Output Saturation Voltage | 250 mV at 4 mA sink - ensures reliable logic-low assertion into TTL/CMOS loads under radiation stress |
| Response Time | 0.8 µs at 50 mV overdrive - supports fast fault response in motor control watchdog or solar array disconnect logic |
| Radiation Tolerance | 100 krad(Si) TID, ELDRS-free - qualified for use in geosynchronous and deep-space missions per QML-V requirements |
Pinout & Package
LM193AHRQMLV is housed in an 8-pin hermetically sealed TO-99 metal can package (package code LMC), rated for −55°C to +125°C operation and compatible with standard military socketing and thermal mounting practices.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator A) | Accepts reference or sensed signal; supports common-mode down to ground |
| 2 | Non-Inverting Input (Comparator A) | Accepts monitored signal; differential input voltage may exceed V+ without damage |
| 3 | Output (Comparator A) | Open-collector NPN - requires external pull-up; supports wired-OR with other comparators |
| 4 | V− / Ground | Power return or system ground reference; input common-mode includes this node |
| 5 | Non-Inverting Input (Comparator B) | Independent second channel input; identical electrical specs to Pin 2 |
| 6 | Inverting Input (Comparator B) | Independent second channel input; identical electrical specs to Pin 1 |
| 7 | Output (Comparator B) | Open-collector NPN - electrically isolated from Pin 3; enables dual-threshold detection |
| 8 | V+ | Positive supply rail - accepts 2.0–36 VDC; supply current independent of voltage magnitude |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Enables direct interface with low-side current sense resistors or battery terminals without level-shifting |
| Open-collector outputs | Supports flexible logic interfacing (TTL/CMOS/DTL/ECL/MOS) and wired-OR configuration for alarm consolidation |
| Single-supply operation | Eliminates need for negative rail in compact avionics modules, reducing board area and power conversion complexity |
| Low input bias current | 25 nA typ - minimizes loading error on high-impedance sensor networks and reference dividers |
| Radiation-hardened design | Qualified to QML-V per MIL-PRF-38535; includes full Group A/B testing and post-irradiation parameter verification |
Applications
| Satellite Power Monitor | Avionics Fault Detector |
|---|---|
|
Use Scenario: Monitoring solar array output voltage and battery charge state in LEO satellite EPS. IC Role / Device Role / Timing Role: Dual comparator performs undervoltage lockout and overvoltage shutdown with independent thresholds. Use Value: ±2.0 mV offset ensures accurate trip points across temperature and radiation exposure; 0.4 mA supply enables continuous monitoring during eclipse periods. |
Use Scenario: Detecting out-of-tolerance sensor readings in flight control computer I/O conditioning. IC Role / Device Role / Timing Role: Compares redundant analog sensor outputs against reference bands to trigger fail-safe transitions. Use Value: Ground-referenced inputs allow direct connection to isolated sensor returns; 0.8 µs response enables real-time anomaly capture before actuator command issuance. |
| Radiation-Tolerant Sequencer | Spacecraft Battery Protector |
|
Use Scenario: Controlling staged power-up of payload subsystems after launch vibration settling. IC Role / Device Role / Timing Role: Generates enable signals based on regulated rail stability and temperature readiness flags. Use Value: 100 krad(Si) TID rating guarantees functionality throughout mission life; open-collector outputs interface directly with FPGA I/O banks. |
Use Scenario: Preventing deep discharge and overcharge in lithium-ion battery packs aboard interplanetary probes. IC Role / Device Role / Timing Role: Dual-channel threshold detection for cell voltage and pack current via shunt amplifier. Use Value: Input common-mode range including ground enables Kelvin sensing of shunt voltage; ELDRS-free behavior ensures stable trip points after years in orbit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM193AJRQMLV | Same radiation spec, but in 8-pin CDIP (NAB) package - larger footprint, higher thermal resistance (θJA = 146°C/W vs. 174°C/W still air) | Better suited for through-hole prototyping or legacy board designs requiring DIP layout compatibility | Select when mechanical fit or existing CDIP socket infrastructure dictates package choice over TO-99 |
| LM193AHRLQMLV | Identical TO-99 package and radiation spec, but with enhanced low-dose-rate sensitivity screening per MIL-STD-883 Method 1019 Condition D | Required for missions operating in trapped proton belts or long-duration lunar surface deployments | Choose when mission profile demands explicit ELDRS validation beyond baseline QML-V requirements |
Compared with LM193AJRQMLV and LM193AHRLQMLV, the LM193AHRQMLV provides optimal thermal performance in compact metal-can form factor while meeting standard QML-V radiation assurance - making it the preferred selection for volume space-qualified systems where size, weight, and proven flight heritage are prioritized.
Availability
LM193AHRQMLV is available at Aetrix Electronics and suitable for satellite power management, avionics fault detection, and spacecraft battery protection requiring stable component supply across extended production cycles and mission lifetimes.
Supply support for LM193AHRQMLV 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 delivering analog and embedded processing solutions, with over 50 years of aerospace component qualification experience and a dedicated radiation-hardened product line.
The LM193AHRQMLV belongs to TI's QML-V-certified comparator family, engineered specifically for high-reliability space applications demanding guaranteed performance under total ionizing dose and extreme temperature stress.
FAQ
What radiation qualification level does the LM193AHRQMLV meet?
The LM193AHRQMLV is fully qualified to QML-V per MIL-PRF-38535, with verified Total Ionizing Dose (TID) tolerance of 100 krad(Si) and confirmed ELDRS-free performance under low-dose-rate irradiation per MIL-STD-883 Method 1019 Condition D. All electrical parameters are tested pre- and post-irradiation across −55°C to +125°C.
Can the LM193AHRQMLV operate from a single 3.3 V supply?
Yes, the LM193AHRQMLV supports single-supply operation from 2.0 VDC to 36 VDC. At 3.3 V, it maintains full functionality including ground-referenced input common-mode range and TTL-compatible output saturation - validated in LM193A Electrical Characteristics tables with test conditions at +V = 5 V and +V = 30 V.
What is the maximum differential input voltage the LM193AHRQMLV can withstand?
The LM193AHRQMLV permits differential input voltage up to ±36 V, with absolute maximum ratings specifying ±36 V differential input and input voltage range of −0.3 V to +36 V. This allows safe operation even when one input exceeds V+ by up to 36 V, provided the other remains within common-mode limits.
Does the LM193AHRQMLV require external hysteresis for stable operation?
Hysteresis is recommended for noise immunity in noisy environments, but not strictly required for basic DC threshold detection. The LM193AHRQMLV's high gain and wide bandwidth make it susceptible to oscillation if output traces capacitively couple to inputs; adding 1–10 mV positive feedback eliminates transition-time instability, as documented in TI's APPLICATION HINTS section.
How does the LM193AHRQMLV differ from commercial-grade LM193A?
The LM193AHRQMLV differs from commercial LM193A in radiation hardening (100 krad TID, ELDRS-free), extended temperature range (−55°C to +125°C), rigorous MIL-STD-883 Group A/B testing, hermetic TO-99 packaging, and QML-V certification. Electrical specs are tightened - e.g., input offset voltage is ±2.0 mV max vs. ±5.0 mV for standard LM193A.
LM193AHRQMLV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-99-8 Metal Can
- Series:
- -
- Packaging:
- Tray
- 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):
- 6mA
- 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
- :
- TO-99-8
LM193AHRQMLV FAQ
1.How can I place an order for LM193AHRQMLV through Aetrix?
Please submit a Request for Quotation (RFQ) for LM193AHRQMLV 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 LM193AHRQMLV reliable?
The price and inventory of LM193AHRQMLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM193AHRQMLV is usually 5 days.
3.What payment methods are accepted for LM193AHRQMLV?
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4.How is shipping managed for LM193AHRQMLV?
LM193AHRQMLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM193AHRQMLV 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 LM193AHRQMLV?
For technical support, including LM193AHRQMLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM193AHRQMLV requirements.
6.How does Aetrix verify that LM193AHRQMLV is sourced from the original manufacturer or authorized distributors?
All LM193AHRQMLV 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 LM193AHRQMLV meets industry standards.
7.What is the process for return or replacement of LM193AHRQMLV?
All LM193AHRQMLV units undergo pre-shipment inspection (PSI). If there is an issue with LM193AHRQMLV, 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 LM193AHRQMLV part is unused and in its original packaging.
Return procedure for LM193AHRQMLV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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