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Texas Instruments LM139AWG-QMLV
- Part No.:
- LM139AWG-QMLV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-CSOIC (0.250", 6.35mm Width)
- Datasheet:
-
LM139AWG-QMLV.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE QUA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM139AWG-QMLV from Texas Instruments is a radiation-hardened quad differential comparator designed for space-grade applications, operating from a single 2–36 V supply with ±5.5 mV max input offset voltage over –55°C to +125°C, 1.3 µs typical response time, and output compatible with TTL/MOS/CMOS logic-used in satellite power sequencing and fault-detection circuits.
For engineers reviewing the LM139AWG-QMLV datasheet, LM139AWG-QMLV pinout, LM139AWG-QMLV application, or LM139AWG-QMLV equivalent, this page delivers verified electrical specs, QML-V qualification context, SOIC-14 package details, radiation tolerance data, and direct alternatives for high-reliability analog signal comparison in aerospace systems.
Technical Context
The LM139AWG-QMLV implements four independent open-collector comparators with rail-to-rail common-mode input range (down to ground), differential input voltage capability up to ±36 V, and guaranteed operation across –55°C to +125°C. Its design supports single-supply operation without level-shifting requirements.
It features low quiescent current (0.8–2 mA total), low input bias current (±100 nA max), and robust ESD protection (2 kV HBM), meeting MIL-PRF-38535 Class V requirements for spaceflight use with full lot traceability and burn-in screening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - Enables direct interface with 3.3 V, 5 V, 12 V, and 28 V avionics buses without regulation. |
| Input Offset Voltage (max) | ±5.5 mV over full temperature - Ensures reliable threshold detection in precision sensor monitoring under thermal stress. |
| Response Time (typ) | 1.3 µs - Supports fast overvoltage/undervoltage fault response in power management subsystems. |
| Operating Temperature | –55°C to +125°C - Qualified for deep-space missions and launch-phase thermal extremes. |
| Output Type | Open-collector - Allows wired-OR logic, flexible pull-up selection, and compatibility with mixed-voltage digital interfaces. |
| ESD Rating (HBM) | 2000 V - Meets spacecraft handling and assembly ESD control requirements per JESD22-A114. |
| QML-V Qualification | MIL-PRF-38535 Class V - Full radiation hardness assurance including TID ≥ 100 krad(Si) and SEL immunity. |
Pinout & Package
LM139AWG-QMLV is housed in a 14-pin SOIC package (body size 8.70 mm × 3.90 mm) with gull-wing leads, qualified per MIL-STD-883 for space-level reliability and hermeticity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 20 mA for driving logic or discrete loads. |
| 2 (IN1+) | Comparator 1 non-inverting input | Accepts signals up to VCC; common-mode range includes ground for direct sensor interfacing. |
| 3 (IN1–) | Comparator 1 inverting input | Differential pair input; supports rail-to-rail common-mode voltage up to VCC – 2 V. |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 for multi-threshold monitoring. |
| 5 (IN2+) | Comparator 2 non-inverting input | Matches IN1+ characteristics; enables matched gain/offset performance across all four channels. |
| 6 (IN2–) | Comparator 2 inverting input | Paired with IN2+; identical input bias and offset specs ensure channel-to-channel consistency. |
| 7 (VCC) | Positive supply | Single supply input; powers all four comparators; no separate ground reference required for internal biasing. |
| 8 (GND) | Negative supply / reference | System ground return; serves as common reference for inputs, outputs, and internal circuitry. |
| 9 (IN3–) | Comparator 3 inverting input | Third channel input; fully specified across temperature and supply for redundant sensing paths. |
| 10 (IN3+) | Comparator 3 non-inverting input | Supports same voltage range and noise rejection as IN1+/IN2+, enabling triple-redundant comparisons. |
| 11 (OUT3) | Comparator 3 output | Third independent open-collector output; used for voting logic or cascaded fault signaling. |
| 12 (IN4–) | Comparator 4 inverting input | Fourth channel input; validated for operation at extreme temperatures and radiation environments. |
| 13 (IN4+) | Comparator 4 non-inverting input | Enables full quadruple comparison with matched propagation delay and offset tracking. |
| 14 (OUT4) | Comparator 4 output | Final output for system-level fault flag generation; compatible with FPGA I/O banks and ASIC interrupt inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Radiation-hardened QML-V qualification | Fully compliant with MIL-PRF-38535 Class V, including lot acceptance testing, burn-in, and radiation lot acceptance tests (RLAT). |
| Rail-to-rail common-mode input range | Operates with inputs down to ground and up to VCC – 2 V-eliminates need for input level shifters in low-side current sensing. |
| Open-collector outputs with 20 mA sink capability | Directly drives LEDs, relays, or logic gates; supports wired-OR configuration for fault-bus arbitration in distributed systems. |
| Low input bias current (±100 nA max) | Minimizes loading on high-impedance sensor sources such as thermistors or photodiodes in telemetry front-ends. |
| Guaranteed operation at –55°C to +125°C | Validated across full military temperature range with no derating-critical for orbital thermal cycling and planetary surface missions. |
Applications
| Power Sequencing Monitor | Satellite Bus Voltage Supervisor |
|---|---|
Use Scenario: Monitoring sequential power-up of avionics modules (e.g., payload processor → comms transceiver → attitude control) to prevent latch-up or brownout. IC Role / Device Role / Timing Role: Quad comparator provides independent voltage thresholds for each rail (1.8 V, 3.3 V, 5 V, 12 V), generating synchronized enable flags. Use Value: Eliminates need for dedicated PMICs; reduces BOM count while maintaining fail-safe sequencing integrity under radiation-induced transients. | Use Scenario: Real-time supervision of main bus voltage (28 V) and backup battery (24 V) in LEO satellites during eclipse and solar array deployment. IC Role / Device Role / Timing Role: Compares bus voltage against precision references to trigger automatic switchover and log fault events via open-collector outputs. Use Value: Achieves <1.3 µs response to undervoltage events-fast enough to protect downstream FPGAs before brownout reset occurs. |
| Redundant Sensor Voting Logic | Radiation-Induced Fault Detector |
Use Scenario: Comparing outputs from three independent temperature sensors in a propulsion module to detect and mask single-point failures. IC Role / Device Role / Timing Role: Each comparator performs pairwise comparison (A vs B, B vs C, A vs C); outputs feed majority-vote logic in FPGA. Use Value: Enables autonomous fault isolation without software intervention-meeting DO-254 Level A and ECSS-E-ST-40C requirements. | Use Scenario: Detecting anomalous current spikes in solar array regulators caused by single-event effects (SEE) or total ionizing dose (TID) degradation. IC Role / Device Role / Timing Role: Monitors shunt voltage with high-speed response; triggers immediate shutdown via open-collector output tied to gate driver enable line. Use Value: Provides hardware-level fault containment faster than microcontroller-based monitoring-preventing catastrophic regulator failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139AWG-SP | Same die, QML-SP qualification (MIL-PRF-38535 Class S); lower radiation test coverage; no RLAT or burn-in. | Approved for non-critical subsystems (e.g., payload telemetry) but not flight-critical power control. | Select LM139AWG-SP only when mission assurance level permits reduced radiation test rigor and cost sensitivity dominates. |
| LM2901B-Q1 | Automotive AEC-Q100 Grade 0 (–40°C to +150°C); no radiation hardening; 0.37 mV typ offset (vs. 5.5 mV max for LM139AWG-QMLV). | Validated for automotive engine control units-not suitable for space due to lack of TID/SEL immunity. | Use LM2901B-Q1 only in terrestrial high-temp industrial systems where radiation tolerance is irrelevant and offset precision is prioritized. |
Compared with LM139AWG-SP and LM2901B-Q1, the LM139AWG-QMLV uniquely delivers full QML-V radiation assurance, extended cold-temperature operation (–55°C), and guaranteed worst-case offset for safety-critical decision logic-making it irreplaceable in primary power control loops of crewed and uncrewed spacecraft.
Availability
LM139AWG-QMLV is available at Aetrix Electronics and suitable for satellite power sequencing, radiation-hardened sensor interfaces, and spacecraft fault-detection systems requiring stable component supply, full traceability, and long-term obsolescence management.
Supply support for LM139AWG-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 space-grade component development.
The LM139 family was engineered for high-reliability analog signal conditioning in mission-critical systems, with the QML-V variant specifically architected to meet NASA and ESA radiation hardness and process control requirements for orbital and deep-space platforms.
FAQ
What is the maximum total ionizing dose (TID) rating for LM139AWG-QMLV?
The LM139AWG-QMLV is qualified to withstand ≥100 krad(Si) total ionizing dose per MIL-PRF-38535 Class V requirements. This rating is verified through lot-specific radiation lot acceptance tests (RLAT) and applies across the full operating temperature range. The device maintains functional specification compliance-including input offset voltage, response time, and output drive capability-up to this TID level. Radiation test reports are available upon request for LM139AWG-QMLV production lots.
Does LM139AWG-QMLV support dual-supply operation?
No, the LM139AWG-QMLV is designed exclusively for single-supply operation from 2 V to 36 V referenced to ground. Its input common-mode range extends to ground but does not support negative supply rails. Attempting dual-supply use (e.g., ±15 V) violates absolute maximum ratings and may cause permanent damage. For dual-supply comparator applications, TI's TLC372-EP or OPA4376-SEP are radiation-tolerant alternatives.
What is the guaranteed minimum sink current for each output of LM139AWG-QMLV?
Each open-collector output of the LM139AWG-QMLV guarantees ≥6 mA sink current at VOL = 1.5 V and VS = 5 V, per Electrical Characteristics Table 6.9. At elevated temperatures (–55°C to +125°C) and higher supply voltages (up to 36 V), the minimum sink current remains ≥6 mA under the same test conditions. This ensures reliable interfacing with standard TTL and CMOS logic families across the full operational envelope.
Is LM139AWG-QMLV pin-compatible with commercial LM339 variants?
Yes, LM139AWG-QMLV uses the industry-standard 14-pin SOIC footprint and identical pinout as LM339, LM239, and LM2901 devices. All input, output, supply, and ground terminals map one-to-one. However, due to its radiation-hardened process and tighter parametric screening, LM139AWG-QMLV must not be substituted into commercial designs without requalification-especially for timing-critical or high-reliability functions where commercial-grade parametric drift may occur.
What packaging and marking standards apply to LM139AWG-QMLV?
LM139AWG-QMLV is supplied in a 14-pin SOIC package conforming to MIL-STD-883 Method 2015 for lead finish (100% matte tin), Method 2008 for visual inspection, and Method 2036 for marking permanence. Each unit is laser-marked with TI logo, "LM139AWG-QMLV", date code, and lot traceability ID. Markings survive 100 hours of 85°C/85% RH humidity testing and MIL-STD-202 Method 215 solvent resistance verification.
LM139AWG-QMLV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-CSOIC (0.250", 6.35mm Width)
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector, Open-Drain
- Voltage - Supply, Single/Dual (±):
- 5V ~ 30V, ±2.5V ~ 15V
- :
- 2mV @ 30V
- Voltage - Input Offset (Max):
- 1000pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2mA
- Current - Quiescent (Max):
- 70dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 1.3µs (Typ)
- Propagation Delay (Max):
- 10mV
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-CFP
LM139AWG-QMLV FAQ
1.How can I place an order for LM139AWG-QMLV through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139AWG-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 LM139AWG-QMLV reliable?
The price and inventory of LM139AWG-QMLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139AWG-QMLV is usually 5 days.
3.What payment methods are accepted for LM139AWG-QMLV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139AWG-QMLV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139AWG-QMLV?
LM139AWG-QMLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139AWG-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 LM139AWG-QMLV?
For technical support, including LM139AWG-QMLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139AWG-QMLV requirements.
6.How does Aetrix verify that LM139AWG-QMLV is sourced from the original manufacturer or authorized distributors?
All LM139AWG-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 LM139AWG-QMLV meets industry standards.
7.What is the process for return or replacement of LM139AWG-QMLV?
All LM139AWG-QMLV units undergo pre-shipment inspection (PSI). If there is an issue with LM139AWG-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 LM139AWG-QMLV part is unused and in its original packaging.
Return procedure for LM139AWG-QMLV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM139AWG-QMLV Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
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LM393DT
STMicroelectronics
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LM2901PWR
Texas Instruments
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LM2903DT
STMicroelectronics
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LM393DR
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LM239DR
Texas Instruments
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LM339APWR
Texas Instruments
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LM2903P
Texas Instruments
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LM393ADR
Texas Instruments
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NCX2200GMAZ
NXP Semiconductors
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