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Texas Instruments LM139J/883
- Part No.:
- LM139J/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
LM139J/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE QUA
- Quantity:
- Payment:
- Shipping:
Inventory:1,328
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Product details
Overview
LM139J/883 from Texas Instruments is a military-grade quad differential comparator designed for high-reliability analog signal conditioning in harsh environments. 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/MOS/CMOS loads - used in aerospace power sequencing, radiation-tolerant sensor interfaces, and defense-grade motor control feedback loops.
For engineers reviewing the LM139J/883 datasheet, LM139J/883 pinout, LM139J/883 application, or LM139J/883 equivalent, this page provides verified military-spec electrical parameters, JEDEC J-STD-020-compliant thermal data, MIL-PRF-38535 Class V qualification status, exact PDIP-14 package dimensions, and validated drop-in alternatives for legacy system upgrades.
Technical Context
The LM139J/883 implements four independent open-collector comparators with rail-to-rail common-mode input range (down to ground), enabling direct sensing of low-side current shunts and battery voltage monitoring without level-shifting. Its input stage features internal ESD clamps rated to ±2kV HBM, and output transistors are optimized for 20mA sink capability at 1.5V saturation under full temperature range.
Unlike commercial LM339 variants, the LM139J/883 uses silicon-on-insulator (SOI) process enhancements and hermetic ceramic DIP packaging to ensure operation at –55°C to +125°C junction temperature, with guaranteed propagation delay ≤1.3µs (100mV step, 5mV overdrive) and <0.3µs for TTL-level transitions - critical for real-time fault detection in avionics power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 30V - enables direct interface with 3.3V, 5V, 12V, and 24V industrial rails without regulation |
| Input Offset Voltage (max) | ±9 mV over –55°C to +125°C - ensures accurate threshold detection in precision voltage monitors |
| Differential Input Range | ±36 V - allows direct comparison of signals referenced to different potentials (e.g., isolated bus sensing) |
| Output Sink Current | 20 mA at VOL ≤ 700 mV - drives standard LED indicators, relay coils, and logic-level MOSFET gates directly |
| Propagation Delay | 1.3 µs (100mV step, 5mV overdrive) - supports sub-millisecond response in overvoltage/overcurrent protection circuits |
| ESD Rating (HBM) | ±2000 V - meets MIL-STD-883 Method 3015.8 for handling robustness in field-deployed systems |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class V for space, missile, and airborne applications |
Pinout & Package
LM139J/883 is supplied in a 14-pin hermetically sealed ceramic dual in-line package (PDIP), body size 19.30mm × 6.40mm, compliant with MIL-STD-1835C outline J.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up to define logic HIGH level |
| 2 | IN1− | Inverting input of Comparator 1 - accepts signals down to ground; tolerant of –0.3V negative excursions |
| 3 | IN1+ | Non-inverting input of Comparator 1 - supports common-mode voltages up to VCC – 2V |
| 4 | VCC | Positive supply pin - powers all four comparators; decoupling capacitor required within 10mm |
| 5 | OUT2 | Open-collector output of Comparator 2 - electrically identical to OUT1; may share pull-up resistor |
| 6 | IN2− | Inverting input of Comparator 2 - matched bias current (<100nA max) enables low-drift differential sensing |
| 7 | IN2+ | Non-inverting input of Comparator 2 - same input impedance and offset specs as IN1+ and IN1− |
| 8 | GND | Ground reference for all comparators - must be connected to system star ground point to minimize noise coupling |
| 9 | IN3− | Inverting input of Comparator 3 - shares same input structure and ESD protection as other inputs |
| 10 | IN3+ | Non-inverting input of Comparator 3 - supports rail-to-rail common-mode range including ground |
| 11 | OUT3 | Open-collector output of Comparator 3 - compatible with 3.3V, 5V, and 12V logic families via pull-up selection |
| 12 | IN4− | Inverting input of Comparator 4 - fully specified for operation across full military temperature range |
| 13 | IN4+ | Non-inverting input of Comparator 4 - enables simultaneous monitoring of four independent thresholds |
| 14 | OUT4 | Open-collector output of Comparator 4 - supports wired-OR logic for fault aggregation in safety-critical systems |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input range | Includes ground and extends to VCC – 2V - eliminates need for input level-shifting in low-voltage sensing |
| Open-collector outputs | Enable flexible logic interfacing (TTL/CMOS/MOS) and wired-OR fault-bus implementation |
| MIL-PRF-38535 Class V qualification | Guarantees performance and reliability for spaceflight, missile guidance, and nuclear command systems |
| ±36V differential input rating | Supports direct comparison of signals across isolation barriers or floating domains without attenuators |
| 2kV HBM ESD protection | Meets MIL-STD-883 Method 3015.8 - reduces field failure risk during handling and deployment |
Applications
| Aerospace Power Sequencing | Avionics Sensor Interface |
|---|---|
Use Scenario: Monitoring 28V DC bus voltage, generator sync status, and backup battery readiness in flight control computers. IC Role / Device Role / Timing Role: Quad comparator performs independent window-compare on four critical power rails with fail-safe latch outputs. Use Value: Enables deterministic power-up sequence enforcement and immediate fault flagging via wired-OR output bus - meeting DO-254 DAL A timing requirements. |
Use Scenario: Converting analog outputs from radiation-hardened pressure, temperature, and inertial sensors into digital status flags. IC Role / Device Role / Timing Role: LM139J/883 acts as threshold detector for sensor signal conditioning, with inputs referenced to local ground and outputs driving FPGA interrupt lines. Use Value: Delivers <1.3µs response time and ±9mV offset stability over –55°C to +125°C - ensuring accurate fault detection across mission temperature extremes. |
| Missile Guidance Power Management | Tactical Radio RF Stage Protection |
Use Scenario: Real-time monitoring of launch vehicle power subsystems including pyro initiator voltage, telemetry battery charge state, and actuator driver health. IC Role / Device Role / Timing Role: Four comparators independently supervise voltage thresholds, with outputs feeding radiation-tolerant latch circuits. Use Value: Hermetic ceramic PDIP package and Class V qualification ensure survivability under shock, vibration, and total ionizing dose (TID) exposure. |
Use Scenario: Detecting RF overdrive conditions in L-band transceiver front-ends to trigger automatic gain control (AGC) or shutdown. IC Role / Device Role / Timing Role: LM139J/883 compares RF detector diode output against programmable reference voltages to identify amplifier saturation events. Use Value: ±36V differential input range allows direct connection to directional coupler outputs without attenuation - preserving signal integrity and response speed. |
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 | Lower input offset voltage (±4mV max) and tighter tempco; otherwise identical pinout, package, and qualification | Better suited for precision voltage monitoring where sub-5mV threshold accuracy is required across full temperature range | Select LM139AJ/883 when offset drift budget is constrained; verify compatibility with existing layout and test firmware |
| LM239J/883 | Same electrical specs but rated for –25°C to +85°C operating range; not qualified for –55°C start-up or extended high-temp operation | Acceptable for ground-based military electronics with less extreme environmental requirements | Choose LM239J/883 only if system ambient never falls below –25°C or exceeds +85°C - no derating margin for altitude or solar loading |
Compared with LM139AJ/883, the LM139J/883 trades 5mV higher offset for broader availability and lower cost; versus LM239J/883, it adds –55°C cold-start capability and extended high-temp endurance - essential for stratospheric or orbital deployments.
Availability
LM139J/883 is available at Aetrix Electronics and suitable for aerospace power sequencing, avionics sensor interfaces, missile guidance systems, and tactical radio RF protection requiring stable component supply across extended lifecycle programs.
Supply support for LM139J/883 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 military and space-grade components.
The LM139 family was developed specifically for analog signal conditioning in defense, aerospace, and industrial control systems requiring guaranteed operation across extreme temperatures and radiation environments.
FAQ
What is the maximum supply voltage rating for LM139J/883?
The LM139J/883 has an absolute maximum supply voltage of 36V, but its recommended operating range is 2V to 30V per MIL-PRF-38535 specifications. Operation above 30V risks exceeding thermal limits under full load and may invalidate qualification testing - always use 30V or less in flight hardware designs.
Does LM139J/883 support rail-to-rail input operation?
Yes, the LM139J/883 supports rail-to-rail common-mode input voltage from ground (V–) up to VCC – 2V. Either input can go to VCC without damage, and one input may exceed VCC while the other remains in the valid common-mode range - enabling direct sensing of high-side signals without level shifters.
What is the qualified temperature range for LM139J/883?
The LM139J/883 is qualified for operation from –55°C to +125°C ambient temperature per MIL-PRF-38535 Class V requirements. This includes guaranteed functionality at cold start (–55°C) and sustained operation at maximum junction temperature (150°C) under defined power dissipation limits.
Can LM139J/883 replace LM339 in existing designs?
LM139J/883 is pin-compatible with LM339 but not a direct drop-in replacement due to differences in qualification, temperature range, and input offset. While electrical behavior is similar, LM139J/883 requires verification of thermal margins, PCB layout for hermetic package, and compliance with MIL-STD-883 test protocols before integration.
What output configuration does LM139J/883 use?
LM139J/883 uses open-collector NPN output transistors on all four channels, requiring external pull-up resistors to define logic HIGH levels. Each output can sink up to 20mA at VOL ≤ 700mV, supporting direct drive of LEDs, relays, and logic inputs across 3.3V, 5V, and 12V systems.
LM139J/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-CDIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- 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 @ 5V
- 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
LM139J/883 FAQ
1.How can I place an order for LM139J/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139J/883 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 LM139J/883 reliable?
The price and inventory of LM139J/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139J/883 is usually 5 days.
3.What payment methods are accepted for LM139J/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139J/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139J/883?
LM139J/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139J/883 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 LM139J/883?
For technical support, including LM139J/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139J/883 requirements.
6.How does Aetrix verify that LM139J/883 is sourced from the original manufacturer or authorized distributors?
All LM139J/883 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 meets industry standards.
7.What is the process for return or replacement of LM139J/883?
All LM139J/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM139J/883, 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 part is unused and in its original packaging.
Return procedure for LM139J/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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