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Texas Instruments LM139AJ/883/MABI
- Part No.:
- LM139AJ/883/MABI
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM139AJ/883/MABI.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM139AJ/883/MABI 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 2–30V supply, delivers ±9mV max input offset voltage over –55°C to +125°C, supports ±36V differential input range, and drives TTL/CMOS/MOS loads - used in satellite power sequencing, missile guidance sensor interfaces, and avionics fault-detection circuits.
For engineers reviewing the LM139AJ/883/MABI datasheet, LM139AJ/883/MABI pinout, LM139AJ/883/MABI application, or LM139AJ/883/MABI equivalent, key selection criteria include its MIL-PRF-38535 Class B qualification, –55°C to +125°C operating range, 1.3µs typical response time, open-collector output architecture, and compatibility with legacy LM139 designs requiring enhanced temperature and reliability assurance.
Technical Context
The LM139AJ/883/MABI implements four independent voltage comparators with rail-to-rail common-mode input range (down to ground), enabling direct sensing of low-side current shunts and battery monitoring signals. Its open-collector outputs support wired-OR logic and flexible pull-up configurations across mixed-voltage domains.
Designed for aerospace and defense applications, it features internal ESD protection (2kV HBM), guaranteed operation under extended thermal stress, and absolute maximum ratings including ±36V differential input voltage and 30V supply - exceeding commercial-grade LM339 variants while maintaining functional pinout compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports wide-input industrial and aerospace power rails without external regulation |
| Input Offset Voltage (max) | ±9 mV over –55°C to +125°C - ensures accurate threshold detection in precision sensor interfaces |
| Response Time (typ) | 1.3 µs - enables fast overvoltage/undervoltage fault response in safety-critical power systems |
| Differential Input Range | ±36 V - allows direct comparison of signals referenced to different potentials, e.g., motor phase voltages |
| Output Type | Open-collector - permits level-shifting, wired-OR logic, and interface with 3.3V/5V/12V digital subsystems |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for deployment in space, engine bays, and weapon systems |
| ESD Rating (HBM) | 2000 V - provides robust handling margin during board assembly and field maintenance in uncontrolled environments |
Pinout & Package
LM139AJ/883/MABI is supplied in a 14-pin ceramic dual-in-line package (CDIP) with 0.300-inch body width and hermetically sealed construction for high-reliability mil-aero use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of comparator 1 - requires external pull-up; sinks up to 20 mA |
| 2 | IN1− | Inverting input of comparator 1 - accepts signals down to ground; common-mode range extends to VCC − 2 V |
| 3 | IN1+ | Non-inverting input of comparator 1 - same common-mode and voltage-range specs as IN1− |
| 4 | VCC | Positive supply pin - rated for 2–30 V DC; quiescent current independent of supply voltage |
| 5 | OUT2 | Open-collector output of comparator 2 - electrically identical to OUT1; supports independent load configuration |
| 6 | IN2− | Inverting input of comparator 2 - fully isolated from other channels; no crosstalk in normal operation |
| 7 | IN2+ | Non-inverting input of comparator 2 - matches IN1± electrical behavior and tolerance limits |
| 8 | GND | Ground reference - serves as return path for all comparators and output sink current |
| 9 | IN3+ | Non-inverting input of comparator 3 - enables three-channel monitoring from single supply |
| 10 | IN3− | Inverting input of comparator 3 - supports differential sensing of feedback loops or sensor bridges |
| 11 | OUT3 | Open-collector output of comparator 3 - shares no internal nodes with OUT1/OUT2; fully independent |
| 12 | IN4+ | Non-inverting input of comparator 4 - completes quad-channel capability for multi-threshold detection |
| 13 | IN4− | Inverting input of comparator 4 - validated for operation at VCC-level inputs without damage |
| 14 | OUT4 | Open-collector output of comparator 4 - capable of driving LEDs, relays, or microcontroller interrupt lines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input | Operates with inputs from ground to VCC − 2 V - eliminates need for level-shifting in low-side sensing |
| Open-collector outputs | Four independent sinking outputs enable flexible bus arbitration, OR-ing, and mixed-voltage interfacing |
| MIL-PRF-38535 Class B | Qualified for high-reliability military/aerospace applications with full lot traceability and screening |
| ±36 V differential input rating | Withstands transient overvoltages and floating sensor references without latch-up or damage |
| 2 kV HBM ESD protection | Robust against electrostatic discharge during handling and integration into ruggedized enclosures |
Applications
| Avionics Power Monitoring | Satellite Battery Management |
|---|---|
|
Use Scenario: Real-time monitoring of 28V aircraft bus voltage, generator output, and emergency battery status across multiple thresholds. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous undervoltage lockout, overvoltage shutdown, and battery charge-state flagging. Use Value: Enables deterministic fault response within 1.3 µs, meeting DO-160 Section 22 surge immunity requirements. |
Use Scenario: Autonomous state-of-charge and cell-balancing control in LEO satellite Li-ion battery packs exposed to thermal cycling. IC Role / Device Role / Timing Role: Compares individual cell voltages against precision references to trigger balancing FETs and telemetry alerts. Use Value: –55°C to +125°C operation ensures reliable function during eclipse-to-sun transitions without derating. |
| Missile Guidance Sensor Interface | Radiation-Hardened Telemetry |
|
Use Scenario: Signal conditioning for gyro and accelerometer outputs in inertial measurement units (IMUs) under high-G launch conditions. IC Role / Device Role / Timing Role: Detects out-of-range sensor excursions and initiates safe-mode transitions via comparator outputs. Use Value: ±9 mV max offset ensures <1% error in angular rate thresholding across full military temperature range. |
Use Scenario: Fault detection and data integrity verification in nuclear-hardened telemetry transmitters aboard strategic platforms. IC Role / Device Role / Timing Role: Validates power-on reset timing, watchdog timeouts, and serial data framing validity before transmission. Use Value: Hermetic CDIP packaging and MIL-qualified screening prevent parametric drift under total ionizing dose (TID) exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139A/883 | Lower max input offset voltage (±4 mV) but identical CDIP-14 package, temperature range, and MIL-PRF-38535 Class B qualification | Preferred where tighter threshold accuracy is required without changing layout or thermal design | Select LM139A/883 when system-level calibration budget demands sub-5 mV offset stability over temperature |
| LM339B | Commercial-grade B-version with 2–36V supply, ±5.5 mV offset, 1 µs response, SOIC/TSSOP packages - not MIL-qualified | Used in cost-sensitive industrial controls and server PSUs where radiation tolerance and extended temperature are not required | Choose LM339B only for non-military applications needing faster response and lower offset, accepting non-hermetic packaging |
Compared with LM139A/883, LM139AJ/883/MABI trades slightly higher offset for broader availability and legacy design continuity; versus LM339B, it sacrifices speed and supply range for guaranteed military reliability, hermetic sealing, and TID resilience.
Availability
LM139AJ/883/MABI is available at Aetrix Electronics and suitable for avionics power sequencing, satellite battery management, missile guidance sensor interfaces, and radiation-hardened telemetry requiring stable component supply across long production lifecycles and strict qualification traceability.
Supply support for LM139AJ/883/MABI 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 deep expertise in high-reliability analog ICs for aerospace, defense, and industrial markets.
The LM139 family was developed to deliver robust, pin-compatible quad comparators for mission-critical systems demanding guaranteed performance across extreme temperatures and harsh environments.
FAQ
What is the maximum supply voltage rating for LM139AJ/883/MABI?
The LM139AJ/883/MABI has an absolute maximum supply voltage of 30 V DC. Operation beyond this limit risks permanent damage. Its recommended operating range is 2 V to 30 V, with quiescent current remaining stable across that span - a key design feature enabling use in unregulated 28V aircraft and vehicle systems where LM139AJ/883/MABI maintains consistent performance.
Does LM139AJ/883/MABI support rail-to-rail input operation?
Yes, LM139AJ/883/MABI supports rail-to-rail common-mode input operation from ground (V–) up to VCC − 2 V. This allows direct interfacing with low-side current shunts, thermistor dividers, and other ground-referenced sensors without level-shifting circuitry - a critical capability confirmed in TI's Electrical Characteristics table for LM139/LM139A under VICR specifications, where LM139AJ/883/MABI inherits identical input range behavior.
What is the output configuration of LM139AJ/883/MABI?
LM139AJ/883/MABI features four independent open-collector outputs. Each output can sink up to 20 mA and requires an external pull-up resistor to define logic-high voltage level. This architecture enables wired-OR logic, mixed-voltage interfacing (e.g., 3.3V MCU inputs with 12V pull-ups), and direct drive of LEDs or small relays - all verified in the device's Output Characteristics section and Pin Functions table for LM139AJ/883/MABI.
Is LM139AJ/883/MABI compatible with standard LM139 PCB footprints?
Yes, LM139AJ/883/MABI uses the same 14-pin CDIP (ceramic dual-in-line) package as the baseline LM139, with identical 0.300-inch row spacing and pinout. No PCB redesign is needed when upgrading from commercial LM139 to LM139AJ/883/MABI - a direct drop-in replacement confirmed by TI's mechanical drawings and orderable addendum for LM139x variants, ensuring seamless integration into existing mil-aero hardware.
What qualification standard applies to LM139AJ/883/MABI?
LM139AJ/883/MABI is qualified per MIL-PRF-38535 Class B, covering rigorous environmental testing (thermal cycling, shock/vibe), electrical screening (burn-in, parametric limits), and lot traceability requirements for high-reliability defense and space applications. This qualification is explicitly documented in TI's LM139 data sheet revision history and product folder links, distinguishing LM139AJ/883/MABI from commercial or industrial variants.
LM139AJ/883/MABI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Bulk
- 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:
- Through Hole
- :
- 14-CDIP
LM139AJ/883/MABI FAQ
1.How can I place an order for LM139AJ/883/MABI through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139AJ/883/MABI 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 LM139AJ/883/MABI reliable?
The price and inventory of LM139AJ/883/MABI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139AJ/883/MABI is usually 5 days.
3.What payment methods are accepted for LM139AJ/883/MABI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139AJ/883/MABI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139AJ/883/MABI?
LM139AJ/883/MABI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139AJ/883/MABI 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 LM139AJ/883/MABI?
For technical support, including LM139AJ/883/MABI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139AJ/883/MABI requirements.
6.How does Aetrix verify that LM139AJ/883/MABI is sourced from the original manufacturer or authorized distributors?
All LM139AJ/883/MABI 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 LM139AJ/883/MABI meets industry standards.
7.What is the process for return or replacement of LM139AJ/883/MABI?
All LM139AJ/883/MABI units undergo pre-shipment inspection (PSI). If there is an issue with LM139AJ/883/MABI, 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 LM139AJ/883/MABI part is unused and in its original packaging.
Return procedure for LM139AJ/883/MABI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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