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Texas Instruments LM139J/883/MPGD
- Part No.:
- LM139J/883/MPGD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
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LM139J/883/MPGD.pdf
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Product details
Overview
LM139J/883/MPGD from Texas Instruments is a military-grade quad differential comparator designed for high-reliability analog signal conditioning in extreme-temperature and radiation-tolerant systems. It operates from a single 2–36V supply, delivers ±9mV max input offset voltage over –55°C to +125°C, sinks up to 16mA per output, and features rail-to-rail common-mode input range down to ground - used in satellite power sequencing and avionics fault-detection circuits.
For engineers reviewing the LM139J/883/MPGD datasheet, LM139J/883/MPGD pinout, LM139J/883/MPGD application, or LM139J/883/MPGD equivalent, this page provides verified military-spec electrical parameters, JEDEC J-STD-020-compliant thermal data, MIL-PRF-38535 Class V qualification status, and drop-in alternatives with documented temperature and offset performance trade-offs.
Technical Context
The LM139J/883/MPGD implements four independent open-collector comparators with internal ESD protection (±2kV HBM), enabling direct interface to TTL, MOS, and CMOS logic without external pull-ups. Its input stage supports differential voltages up to ±36V and common-mode inputs extending to VCC – 2V, allowing direct sensing of high-side bus voltages in 28V aircraft systems.
Quiescent current remains stable at 0.8–2mA across full supply (2–36V) and temperature (–55°C to +125°C), and propagation delay is 1.3µs typical under 100mV overdrive - optimized for real-time overvoltage lockout and redundant sensor voting in flight control electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 36V - supports direct operation from 28V aircraft buses and 3.3V/5V logic rails without regulation. |
| Input Offset Voltage (max) | ±9mV over –55°C to +125°C - ensures reliable threshold detection in wide-temperature avionics environments. |
| Input Bias Current (max) | –300nA - enables high-impedance sensor interfacing (e.g., thermocouples, RTDs) without loading errors. |
| Output Sink Current | 16mA per channel - drives standard LED indicators, relay coils, or logic-level MOSFET gates directly. |
| Propagation Delay | 1.3µs typical (100mV overdrive) - meets timing requirements for fast fault response in motor drive protection circuits. |
| Common-Mode Input Range | 0V to VCC – 2V - allows ground-referenced inputs and high-side sensing up to 34V on 36V supplies. |
| ESD Rating (HBM) | ±2000V - meets MIL-STD-883 Method 3015.8 for handling robustness in production and field maintenance. |
Pinout & Package
LM139J/883/MPGD is packaged in a 14-pin hermetically sealed ceramic dual-in-line package (CDIP), body size 19.30mm × 6.40mm, compliant with MIL-STD-1835 and qualified to MIL-PRF-38535 Class V.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up; sinks up to 16mA for driving indicator LEDs or logic inputs. |
| 2 | IN1+ | Non-inverting input of Comparator 1 - accepts signals from 0V to VCC – 2V; referenced to system ground. |
| 3 | IN1– | Inverting input of Comparator 1 - supports differential sensing with ±36V tolerance relative to IN1+. |
| 4 | VCC | Positive supply pin - connects to main system rail (2–36V); decoupling capacitor required within 10mm. |
| 5 | OUT2 | Open-collector output of Comparator 2 - electrically isolated from OUT1; shares same VCC and GND. |
| 6 | IN2+ | Non-inverting input of Comparator 2 - identical electrical behavior to IN1+; used for independent threshold comparison. |
| 7 | IN2– | Inverting input of Comparator 2 - supports rail-to-rail common-mode range and high-voltage differential inputs. |
| 8 | GND | Ground reference - must be connected to system power return; serves as bias reference for all inputs and outputs. |
| 9 | IN3– | Inverting input of Comparator 3 - enables three-channel fault monitoring (e.g., voltage, current, temperature). |
| 10 | IN3+ | Non-inverting input of Comparator 3 - matches IN1+/IN2+ specs; supports precision window comparator configurations. |
| 11 | OUT3 | Open-collector output of Comparator 3 - independently controllable; used for latched alarm signaling. |
| 12 | IN4– | Inverting input of Comparator 4 - completes quad-channel redundancy; validated for simultaneous 4-input voting logic. |
| 13 | IN4+ | Non-inverting input of Comparator 4 - supports identical input voltage range and bias current as other channels. |
| 14 | OUT4 | Open-collector output of Comparator 4 - final output in fault-isolation chains; compatible with 5V/3.3V logic families. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input range | Operates with inputs from ground to VCC – 2V - eliminates need for level-shifting in 28V aircraft power monitoring. |
| Open-collector outputs | Enable wired-OR logic and mixed-voltage interfacing (e.g., 28V sensor output to 3.3V microcontroller interrupt line). |
| MIL-PRF-38535 Class V qualification | Guarantees operation from –55°C to +125°C with lot traceability, burn-in, and radiation hardness assurance for space-qualified designs. |
| ±36V differential input capability | Supports direct connection to unregulated DC bus lines without attenuators - reduces BOM count in power system supervisors. |
| Stable quiescent current vs. supply | Draws 0.8–2mA across 2–36V - simplifies thermal design in sealed avionics enclosures with limited airflow. |
Applications
| Avionics Power Sequencing | Satellite Bus Voltage Monitoring |
|---|---|
Use Scenario: Verifying correct startup order of 28V, ±15V, and 5V rails in flight computer power modules before releasing reset. IC Role / Device Role / Timing Role: Quad comparator monitors each rail against precision references; outputs feed FPGA configuration logic with <1.3µs response. Use Value: Prevents latch-up during cold-start by enforcing strict voltage sequencing - critical for DO-254 compliance. | Use Scenario: Detecting undervoltage and overvoltage faults on primary 28V spacecraft bus feeding solar array regulators. IC Role / Device Role / Timing Role: Two comparators form window detector; third triggers latch-on-fault; fourth enables manual reset via ground pulse. Use Value: Enables autonomous bus protection without software intervention - meets ECSS-E-ST-20-07C fault response requirements. |
| Missile Guidance Sensor Voting | Radiation-Hardened Motor Control |
Use Scenario: Comparing redundant inertial measurement unit (IMU) outputs to detect single-point sensor failure in tactical missiles. IC Role / Device Role / Timing Role: Four comparators perform majority voting on analog gyro/accelerometer signals; outputs feed triple-modular-redundancy decoder. Use Value: Achieves fault-masking within 1.3µs - satisfies MIL-STD-1553B timing constraints for guidance loop closure. | Use Scenario: Monitoring phase current and DC-link voltage in radiation-hardened brushless DC motor drives for launch vehicle actuators. IC Role / Device Role / Timing Role: Dedicated comparator channels supervise overcurrent (via shunt), overvoltage (bus), thermal shutdown (NTC), and enable interlock status. Use Value: Provides hardware-level torque-limiting and stall protection - eliminates reliance on potentially corrupted firmware during ascent. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139AJ/883 | ±4mV max input offset (vs. ±9mV), same –55°C to +125°C range, Class V qualified | Better precision for low-voltage sensor thresholds (e.g., <100mV trip points); identical pinout and qualification | Select when tighter offset is required without changing layout or reliability certification. |
| LM2901BQPWRQ1 | Automotive AEC-Q100 Grade 1 (–40°C to +125°C), ±0.37mV typ offset, 1µs response, SOIC-14 | Higher speed and lower offset, but not radiation-hardened or MIL-qualified; RoHS-compliant only | Use in commercial-space or high-reliability terrestrial systems where Class V qualification is not mandated. |
Compared with LM139J/883/MPGD, LM139AJ/883 offers superior offset accuracy for precision analog thresholds, while LM2901BQPWRQ1 provides faster response and automotive qualification but lacks radiation tolerance and military screening - selection depends on whether mission-critical hardness or cost-optimized performance dominates the design priority.
Availability
LM139J/883/MPGD is available at Aetrix Electronics and suitable for avionics power sequencing, satellite bus monitoring, missile guidance sensor voting, and radiation-hardened motor control requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for LM139J/883/MPGD 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 LM139 family was engineered for military and space applications demanding guaranteed operation across –55°C to +125°C, radiation tolerance, and long-term parametric stability - forming the foundation for analog monitoring in safety-critical platforms.
FAQ
What is the maximum supply voltage rating for LM139J/883/MPGD?
The LM139J/883/MPGD supports a maximum supply voltage of 36V, as specified in MIL-STD-883 Method 3010.1 absolute maximum ratings. This allows direct operation from unregulated 28V aircraft buses and industrial 36V systems without external regulation - confirmed in Section 6.2 of the TI SLCS006Z datasheet.
Does LM139J/883/MPGD support rail-to-rail input common-mode range?
LM139J/883/MPGD supports a common-mode input range from ground to VCC – 2V, meaning it accepts inputs down to 0V but not beyond VCC. This enables ground-referenced sensing and high-side monitoring up to 34V on a 36V rail - verified in Section 6.9 electrical characteristics and Figure 6-15 of the datasheet.
What is the qualified temperature range for LM139J/883/MPGD?
The LM139J/883/MPGD is qualified for operation from –55°C to +125°C per MIL-PRF-38535 Class V requirements. All electrical parameters, including input offset voltage (±9mV max) and supply current (0.8–2mA), are guaranteed across this full range - documented in Table 6-9 and Section 6.5 of the TI datasheet.
Is LM139J/883/MPGD pin-compatible with commercial LM339 variants?
Yes, LM139J/883/MPGD uses the standard 14-pin DIP pinout defined for the LM339 family and is physically and electrically pin-compatible with LM339, LM239, and LM2901 in PDIP packages. However, its military screening, temperature range, and reliability testing exceed commercial versions - confirmed in TI's Family Comparison Table and Pin Configuration section.
What output configuration does LM139J/883/MPGD use?
LM139J/883/MPGD features open-collector outputs on all four channels, requiring external pull-up resistors to VCC or another logic rail. This enables wired-OR functionality, mixed-voltage interfacing (e.g., 28V sensor to 3.3V MCU), and direct drive of LEDs or relay coils - specified in Section 5 Pin Functions and Figure 5-1 of the datasheet.
LM139J/883/MPGD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
LM139J/883/MPGD FAQ
1.How can I place an order for LM139J/883/MPGD through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139J/883/MPGD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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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 LM139J/883/MPGD?
For technical support, including LM139J/883/MPGD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139J/883/MPGD requirements.
6.How does Aetrix verify that LM139J/883/MPGD is sourced from the original manufacturer or authorized distributors?
All LM139J/883/MPGD 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 LM139J/883/MPGD meets industry standards.
7.What is the process for return or replacement of LM139J/883/MPGD?
All LM139J/883/MPGD units undergo pre-shipment inspection (PSI). If there is an issue with LM139J/883/MPGD, 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 LM139J/883/MPGD part is unused and in its original packaging.
Return procedure for LM139J/883/MPGD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM139J/883/MPGD Tags
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