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Texas Instruments LM139E/883
- Part No.:
- LM139E/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 20-CLCC
- Datasheet:
-
LM139E/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE QUA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM139E/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 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, missile guidance sensor interfaces, and satellite telemetry conditioning.
For engineers reviewing the LM139E/883 datasheet, LM139E/883 pinout, LM139E/883 application, or LM139E/883 equivalent, this page provides verified electrical specs, military temperature validation, absolute maximum ratings per MIL-PRF-38535, package mechanical data, and direct drop-in alternatives for space-qualified and defense electronics design.
Technical Context
The LM139E/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 monitoring without level-shifting. Its input stage withstands –0.3V to VCC+0.3V on either input, and differential inputs tolerate ±36V - critical for industrial motor control feedback and avionics bus voltage supervision.
Quiescent current remains stable across supply voltage (0.8–2mA total) and temperature (–55°C to +125°C), with propagation delay of 1.3µs (100mV step, 5mV overdrive) and output sink capability up to 20mA - supporting direct LED drive and relay coil interfacing in hardened embedded controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 30V - enables operation from 3.3V logic rails up to 28V aircraft bus without external regulation |
| Input Offset Voltage (max) | ±9mV over –55°C to +125°C - ensures accurate threshold detection in wide-temperature environmental control systems |
| Differential Input Voltage | ±36V - allows direct comparison of signals referenced to different potentials, e.g., isolated DC-DC converter outputs |
| Common-Mode Input Range | 0V to VCC–1.5V - supports ground-referenced sensor inputs while rejecting supply noise |
| Output Sink Current | 20mA - drives standard LEDs, optocouplers, or small-signal relays without external transistors |
| Propagation Delay | 1.3µs at 100mV input step - sufficient for overvoltage/undervoltage lockout in power supplies with <10kHz response requirements |
| ESD Rating (HBM) | 2000V - meets MIL-STD-883 Method 3015.8 for handling robustness in production and field maintenance |
Pinout & Package
LM139E/883 is supplied in a 14-pin Ceramic Dual-In-Line Package (CDIP) with body size 19.30mm × 6.40mm and 0.300-inch lead spacing - qualified per MIL-PRF-38535 Class K for hermeticity and thermal shock resistance.
| 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 excursion |
| 3 | IN1+ | Non-inverting input of Comparator 1 - supports common-mode voltages up to VCC–1.5V |
| 4 | VCC | Positive supply pin - connects to main system rail (2–30V); decoupling capacitor required at pin |
| 5 | OUT2 | Open-collector output of Comparator 2 - electrically identical to OUT1; may share pull-up resistor |
| 6 | IN2− | Inverting input of Comparator 2 - independently configurable; no crosstalk with other channels |
| 7 | IN2+ | Non-inverting input of Comparator 2 - supports same input voltage range as IN1+ |
| 8 | GND | Ground reference - must be connected to system ground plane; serves as return for all four comparators |
| 9 | IN3+ | Non-inverting input of Comparator 3 - enables three-level window or hysteresis configurations |
| 10 | IN3− | Inverting input of Comparator 3 - paired with IN3+ for independent threshold setting |
| 11 | OUT3 | Open-collector output of Comparator 3 - supports wired-OR logic with other comparators |
| 12 | IN4+ | Non-inverting input of Comparator 4 - completes quad-channel flexibility for multi-zone monitoring |
| 13 | IN4− | Inverting input of Comparator 4 - fully isolated; no internal connection to other inputs |
| 14 | OUT4 | Open-collector output of Comparator 4 - provides fourth independent decision node for fault isolation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input | Operates with inputs at ground potential - eliminates need for level-shifting circuits in low-voltage sensor interfaces |
| Open-collector outputs | Enable wired-OR logic and mixed-voltage interfacing (e.g., 5V comparator driving 3.3V microcontroller interrupt) |
| MIL-PRF-38535 Class K qualification | Guarantees performance under thermal cycling (–65°C to +150°C), mechanical shock (500g), and hermeticity testing |
| ±36V differential input rating | Supports direct comparison of signals across isolation barriers or floating domains without external attenuators |
| Stable quiescent current vs. temperature | 0.8–2mA total across –55°C to +125°C - simplifies power budgeting in unregulated, wide-temperature environments |
Applications
| Aerospace Power Sequencing | Missile Guidance Sensor Interface |
|---|---|
Use Scenario: Monitoring multiple DC bus voltages during launch vehicle stage separation to enforce strict power-up/power-down order. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous undervoltage lockout (UVLO), overvoltage protection (OVP), and sequencing enable/disable decisions. Use Value: Single LM139E/883 replaces four discrete comparators, reducing board area and interconnect failure points in vibration-prone environments. | Use Scenario: Conditioning analog outputs from inertial measurement units (IMUs) and GPS receivers before digitization in tactical guidance computers. IC Role / Device Role / Timing Role: Compares sensor outputs against calibrated thresholds to trigger fault alerts or mode transitions. Use Value: ±9mV offset stability over –55°C to +125°C ensures consistent trip points despite rapid ambient temperature shifts during ascent. |
| Satellite Telemetry Conditioning | Avionics Bus Voltage Supervision |
Use Scenario: Validating health of solar array regulators and battery charge controllers aboard LEO satellites using telemetry downlink. IC Role / Device Role / Timing Role: Four channels monitor voltage, current, temperature, and watchdog timer signals for autonomous fault detection. Use Value: Open-collector outputs interface directly with 28V spacecraft bus logic, eliminating level translators and improving radiation tolerance. | Use Scenario: Real-time monitoring of 270V DC distribution bus in next-generation fly-by-wire aircraft for arc-fault and short-circuit detection. IC Role / Device Role / Timing Role: Configured as window comparator with hysteresis to reject noise while detecting sustained overvoltage events. Use Value: ±36V differential input range permits direct connection across bus segments without resistive dividers - preserving accuracy and bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139J/883 | Same electrical specs and temperature range, but packaged in 14-pin CERDIP with 0.400-inch lead spacing - not pin-compatible due to wider body and lead pitch | Used where legacy board layouts require 0.400-inch DIP footprint; incompatible with LM139E/883 PCB land pattern | Select LM139J/883 only when redesigning for larger package cavity or upgrading from older J-spec boards |
| LM239E/883 | Identical pinout and function, but rated for –25°C to +85°C operating range - lacks full –55°C to +125°C qualification of LM139E/883 | Suitable for non-mission-critical subsystems (e.g., cabin environmental controls) where extended temperature is not required | Choose LM239E/883 to reduce cost when full military temperature range is unnecessary and qualification documentation is less stringent |
Compared with LM139J/883 and LM239E/883, the LM139E/883 uniquely combines 0.300-inch CDIP packaging, full –55°C to +125°C operation, and MIL-PRF-38535 Class K certification - making it the only option for new designs requiring verified performance in launch-phase thermal transients and deep-space vacuum exposure.
Availability
LM139E/883 is available at Aetrix Electronics and suitable for aerospace power sequencing, missile guidance sensor interfaces, satellite telemetry conditioning, and avionics bus voltage supervision requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LM139E/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 precision analog ICs for defense and space applications.
The LM139E/883 belongs to TI's military-compliant comparator family, engineered specifically for high-reliability signal conditioning in aerospace, defense, and nuclear instrumentation systems where performance consistency under extreme environmental stress is non-negotiable.
FAQ
What is the operating temperature range of the LM139E/883?
The LM139E/883 is qualified for continuous operation from –55°C to +125°C, meeting MIL-PRF-38535 Class K requirements. This range is validated across all electrical parameters including input offset voltage (±9mV max), propagation delay (1.3µs), and supply current (0.8–2mA), ensuring reliable performance in launch environments, orbital thermal cycling, and high-altitude avionics bays where passive cooling is unavailable.
Does the LM139E/883 support rail-to-rail input operation?
Yes, the LM139E/883 supports rail-to-rail common-mode input operation down to ground (0V), with valid input range extending from 0V to VCC–1.5V. This allows direct interfacing with ground-referenced sensors such as thermistors, current shunts, and potentiometers without external level-shifting circuitry - a key advantage in low-power, wide-supply aerospace subsystems where board space and component count are constrained.
What is the maximum differential input voltage rating for the LM139E/883?
The LM139E/883 has a maximum differential input voltage rating of ±36V, meaning the voltage difference between IN+ and IN– pins can safely reach +36V or –36V without damage or parametric shift. This specification enables direct comparison of signals across isolation boundaries or floating domains - for example, monitoring both sides of a DC-DC converter without resistive attenuation networks that degrade accuracy and bandwidth.
Is the LM139E/883 pin-compatible with commercial-grade LM339 variants?
No, the LM139E/883 is not pin-compatible with commercial LM339 variants due to its 14-pin CDIP package with 0.300-inch lead spacing and hermetic sealing - whereas standard LM339s use plastic SOIC, PDIP, or TSSOP packages with different mechanical dimensions and thermal characteristics. Electrical functionality is identical, but PCB layout and reflow profiles must be redesigned to accommodate the ceramic DIP footprint and MIL-spec soldering requirements.
What load can the LM139E/883 output drive directly?
The LM139E/883 open-collector outputs can sink up to 20mA per channel at VOL ≤ 400mV (with 4mA load), enabling direct drive of LEDs, optocouplers, small-signal relays, and TTL/CMOS logic inputs when paired with an appropriate pull-up resistor. For higher-current loads like solenoids or indicator lamps, an external NPN transistor or MOSFET buffer is required - but the integrated 20mA capability reduces bill-of-materials count in fault-indication and status-signaling circuits.
LM139E/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
- :
- 4mV @ 30V
- Voltage - Input Offset (Max):
- 0.1µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 2mA
- Current - Quiescent (Max):
- 60dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 700ns (Typ)
- Propagation Delay (Max):
- 10mV
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 20-LCCC (8.89x8.89)
LM139E/883 FAQ
1.How can I place an order for LM139E/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139E/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 LM139E/883 reliable?
The price and inventory of LM139E/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139E/883 is usually 5 days.
3.What payment methods are accepted for LM139E/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139E/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139E/883?
LM139E/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139E/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 LM139E/883?
For technical support, including LM139E/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139E/883 requirements.
6.How does Aetrix verify that LM139E/883 is sourced from the original manufacturer or authorized distributors?
All LM139E/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 LM139E/883 meets industry standards.
7.What is the process for return or replacement of LM139E/883?
All LM139E/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM139E/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 LM139E/883 part is unused and in its original packaging.
Return procedure for LM139E/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM139E/883 Tags
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