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Texas Instruments LM139AE/883
- Part No.:
- LM139AE/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 20-CLCC
- Datasheet:
-
LM139AE/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE QUA
- Quantity:
- Payment:
- Shipping:
Inventory:3,441
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Product details
Overview
LM139AE/883 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 2V to 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 satellite power sequencing, avionics fault detection, and missile guidance sensor interfaces.
For engineers reviewing the LM139AE/883 datasheet, LM139AE/883 pinout, LM139AE/883 application, or LM139AE/883 equivalent, key selection criteria include its MIL-PRF-38535 Class V qualification, extended temperature operation, open-collector output compatibility with pull-up networks, and direct drop-in capability for legacy LM139 designs requiring enhanced reliability assurance.
Technical Context
The LM139AE/883 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 level translation across mixed-voltage subsystems.
Designed for aerospace and defense applications, it features internal ESD protection (2kV HBM), guaranteed operation at –55°C to +125°C, and absolute maximum ratings including ±36V differential input voltage and 30V supply - exceeding commercial-grade LM339 variants in ruggedness and thermal margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 30V - supports wide-input industrial and aerospace power rails without regulation |
| Input Offset Voltage (max) | ±9mV over –55°C to +125°C - ensures stable threshold detection in unregulated thermal environments |
| Differential Input Voltage | ±36V - enables direct comparison of signals referenced to different potentials (e.g., motor phase voltages) |
| Output Type | Open-collector - allows flexible pull-up to 30V and wired-OR configuration for alarm bus aggregation |
| Quiescent Current | 0.8–2mA per device - enables low-power wake-up circuits and battery-backed monitoring |
| Response Time (typ) | 1.3µs - sufficient for overvoltage/undervoltage lockout and fast fault response in power converters |
| ESD Rating (HBM) | 2000V - meets MIL-STD-883 Method 3015 requirements for handling robustness |
Pinout & Package
LM139AE/883 is packaged in a 14-pin hermetically sealed ceramic dual in-line package (CDIP) with 0.300-inch body width and 0.100-inch lead pitch - qualified to MIL-PRF-38535 for space and defense use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up for logic-high assertion |
| 2 | IN1− | Inverting input of Comparator 1 - accepts signals down to ground or below (with clamping diode) |
| 3 | IN1+ | Non-inverting input of Comparator 1 - supports common-mode range up to VCC − 1.5V |
| 4 | VCC | Positive supply pin - rated for 2V to 30V DC; decoupling capacitor required near pin |
| 5 | IN2− | Inverting input of Comparator 2 - electrically identical to IN1−; enables dual-threshold sensing |
| 6 | IN2+ | Non-inverting input of Comparator 2 - supports independent reference or feedback path |
| 7 | GND | Ground reference - must be connected to system common; serves as return for all comparators |
| 8 | IN3− | Inverting input of Comparator 3 - used for third channel in multi-zone monitoring |
| 9 | IN3+ | Non-inverting input of Comparator 3 - configurable for hysteresis via feedback resistor |
| 10 | IN4− | Inverting input of Comparator 4 - supports redundant fault checking or window comparator |
| 11 | IN4+ | Non-inverting input of Comparator 4 - enables full quad-channel analog decision logic |
| 12 | OUT2 | Open-collector output of Comparator 2 - shares same electrical behavior as OUT1 |
| 13 | OUT3 | Open-collector output of Comparator 3 - compatible with 5V/12V/24V pull-up networks |
| 14 | OUT4 | Open-collector output of Comparator 4 - supports parallel alarm signaling or voting logic |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input range | Includes ground and extends to VCC − 1.5V - eliminates need for level-shifting in low-side sensing |
| Open-collector outputs | Supports mixed-voltage interfacing and wired-OR alarm buses without external logic gates |
| MIL-PRF-38535 Class V qualification | Guarantees performance under shock, vibration, temperature cycling, and long-term storage per military standards |
| ±36V differential input rating | Enables direct comparison of high-side and low-side signals in motor drive or power supply feedback |
| 2kV HBM ESD protection | Meets MIL-STD-883 requirement for handling integrity in controlled and uncontrolled environments |
Applications
| Power Supply Monitoring | Avionics Fault Detection |
|---|---|
Use Scenario: Real-time validation of +5V, +12V, and –12V rails in flight computer power modules. IC Role / Device Role / Timing Role: Quad comparator monitors each rail against precision references to assert individual fault flags. Use Value: Enables immediate shutdown or reconfiguration upon out-of-tolerance detection - critical for DO-254 compliance. | Use Scenario: Redundant sensor health checking in inertial measurement units (IMUs) and air data computers. IC Role / Device Role / Timing Role: Compares analog outputs from triple-redundant accelerometers and gyros to detect drift or failure. Use Value: Provides deterministic, sub-microsecond fault isolation without software latency - satisfies DAL-A timing constraints. |
| Satellite Power Sequencing | Missile Guidance Interface |
Use Scenario: Controlled turn-on sequence of payload subsystems after launch, based on bus voltage stabilization. IC Role / Device Role / Timing Role: Four comparators validate pre-charge, main bus, heater, and telemetry supply readiness before enabling downstream regulators. Use Value: Prevents inrush-induced brownouts and ensures orderly power-up across radiation-hardened FPGAs and RF transceivers. | Use Scenario: Analog interface between seeker head sensors and guidance processor ADC inputs. IC Role / Device Role / Timing Role: Threshold detection on gyro bias voltage, antenna alignment signals, and proximity fuse triggers. Use Value: Delivers deterministic, zero-software-latency decision making for arming/fusing logic in hardened environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139A/883 | ±4mV max input offset voltage over –55°C to +125°C; otherwise identical pinout, package, and specs | Better precision for high-accuracy thresholding (e.g., radiation monitor trip points) | Select when tighter offset stability is required without changing layout or qualification path |
| LM339B | Commercial-grade B-version: ±5.5mV offset, 2–36V supply, –40°C to +85°C, SOIC/TSSOP only | Not qualified for space/defense; lacks MIL-PRF-38535 screening and hermetic packaging | Use only in non-safety-critical terrestrial systems where cost and volume outweigh reliability requirements |
Compared with LM139A/883, LM139AE/883 trades slightly higher offset for full Class V conformance and extended burn-in; compared with LM339B, it provides hermetic sealing, military screening, and guaranteed operation at –55°C - essential for mission-critical hardware where field failure is unacceptable.
Availability
LM139AE/883 is available at Aetrix Electronics and suitable for satellite power management, avionics fault detection, and missile guidance interface applications requiring stable component supply across extended lifecycle programs.
Supply support for LM139AE/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 delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets.
The LM139 family was developed specifically for high-reliability analog decision-making in harsh environments - emphasizing rugged input stages, predictable open-collector outputs, and qualification-ready packaging for defense and space programs.
FAQ
What is the operating temperature range of the LM139AE/883?
The LM139AE/883 is specified for operation from –55°C to +125°C, meeting MIL-PRF-38535 Class V requirements for extreme-environment electronics. This range is validated through temperature cycling, burn-in, and parametric testing across the full interval - ensuring reliable comparator function in spacecraft thermal vacuums and jet engine-mounted control units. The LM139AE/883 maintains its ±9mV input offset voltage limit throughout this range.
Does the LM139AE/883 support rail-to-rail input operation?
Yes, the LM139AE/883 supports a common-mode input voltage range that includes ground and extends up to VCC − 1.5V, enabling true rail-to-rail sensing on the lower end. Either input may go to VCC without damage, and proper output state is maintained as long as one input remains within the valid common-mode window. This capability is confirmed in Section 6.9 of the TI datasheet for LM139/LM139A devices, which directly applies to LM139AE/883.
Is the LM139AE/883 pin-compatible with commercial LM339 variants?
No - the LM139AE/883 uses a 14-pin CDIP package with 0.300-inch width, while standard LM339 variants commonly use SOIC-14, PDIP-14, or TSSOP-14 packages with differing pin pitches and footprints. Although the pin functions (e.g., IN1+, OUT1, GND) match the industry-standard LM339 assignment, physical layout compatibility requires mechanical redesign. The LM139AE/883 is functionally compatible with LM139/LM139A but not mechanically interchangeable with LM339B or LM2901B.
What is the maximum supply voltage rating for the LM139AE/883?
The LM139AE/883 has a maximum supply voltage rating of 30V, as defined in Section 6.2 ("Absolute Maximum Ratings for Non-B Versions") of the TI datasheet. This differs from the 36V rating of LM339B/LM2901B variants. Exceeding 30V on VCC risks permanent damage. The 30V limit applies across the full –55°C to +125°C operating range and is verified during MIL-STD-750 test methods for high-voltage stress.
Can the LM139AE/883 drive TTL logic directly?
Yes, the LM139AE/883 open-collector outputs are explicitly designed to interface with TTL, MOS, and CMOS logic families. When pulled up to 5V via an external resistor (typically 1–10kΩ), the output sinks ≥6mA at VOL ≤ 400mV (per datasheet Section 6.9), satisfying TTL input low-level voltage and current requirements. This capability is retained across the full temperature range and qualifies the LM139AE/883 for use in legacy TTL-based avionics backplanes and test equipment.
LM139AE/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-CLCC
- 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:
- Surface Mount
- :
- 20-LCCC (8.89x8.89)
LM139AE/883 FAQ
1.How can I place an order for LM139AE/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139AE/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 LM139AE/883 reliable?
The price and inventory of LM139AE/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139AE/883 is usually 5 days.
3.What payment methods are accepted for LM139AE/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139AE/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139AE/883?
LM139AE/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139AE/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 LM139AE/883?
For technical support, including LM139AE/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139AE/883 requirements.
6.How does Aetrix verify that LM139AE/883 is sourced from the original manufacturer or authorized distributors?
All LM139AE/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 LM139AE/883 meets industry standards.
7.What is the process for return or replacement of LM139AE/883?
All LM139AE/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM139AE/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 LM139AE/883 part is unused and in its original packaging.
Return procedure for LM139AE/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM139AE/883 Tags
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