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Texas Instruments LM139AWG/883
- Part No.:
- LM139AWG/883
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-CSOIC (0.250", 6.35mm Width)
- Datasheet:
-
LM139AWG/883.pdf
- Description:
- LOW POWER LOW OFFSET VOLTAGE QUA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM139AWG/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 - deployed in satellite power sequencing, avionics fault detection, and missile guidance sensor interfaces.
For engineers reviewing the LM139AWG/883 datasheet, LM139AWG/883 pinout, LM139AWG/883 application, or LM139AWG/883 equivalent, key selection criteria include its MIL-PRF-38535 Class B qualification, extended temperature operation, open-collector output compatibility, input common-mode range including ground, and guaranteed performance under total ionizing dose (TID) up to 100 krad(Si).
Technical Context
The LM139AWG/883 implements four independent voltage comparators with rail-to-rail input capability down to ground and differential input tolerance up to ±36V. Its internal architecture features dedicated ESD clamps and hardened junction-isolated bipolar process, enabling robust operation in high-noise aerospace environments without latch-up or parametric shift.
It uses open-collector outputs requiring external pull-up resistors, supports single-supply operation only (no dual-rail configuration), and maintains stable quiescent current (0.8–2 mA across full supply and temperature range), making it suitable for low-power, high-stability threshold detection in safety-critical subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 30 V - Enables direct interface with 3.3V, 5V, 12V, and 28V aircraft/spacecraft bus voltages without regulation. |
| Input Offset Voltage (max) | ±9 mV over –55°C to +125°C - Ensures reliable threshold detection accuracy in wide-temperature launch and orbital phases. |
| Differential Input Range | ±36 V - Allows direct comparison of signals referenced to different potentials (e.g., isolated sensor outputs vs. system ground). |
| Output Type | Open-collector - Permits wired-OR logic, level translation, and flexible pull-up to any compatible voltage (e.g., 3.3V logic with 28V supply). |
| Quiescent Current | 0.8–2 mA (4 comparators) - Supports low-power standby modes in battery-backed or energy-constrained subsystems. |
| ESD Rating (HBM) | 2000 V - Meets MIL-STD-883 Method 3015.8 for handling robustness in controlled assembly environments. |
| Common-Mode Range | 0 V to (VCC – 1.5 V) - Includes ground reference, enabling direct sensing of 0–V signals (e.g., current-sense shunt below ground). |
Pinout & Package
LM139AWG/883 is supplied in a 14-pin ceramic flatpack (WG) package measuring 19.05 mm × 7.62 mm × 2.54 mm (0.75 in × 0.3 in × 0.1 in), qualified per MIL-PRF-38535 and screened to Class B reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - Requires external pull-up; sinks up to 20 mA at VOL ≤ 400 mV. |
| 2 | OUT2 | Open-collector output of Comparator 2 - Electrically identical to OUT1; supports independent logic-level assertion. |
| 3 | VCC | Positive supply pin - Accepts 2–30 V DC; no reverse-polarity protection; decoupling capacitor required near pin. |
| 4 | IN1– | Inverting input of Comparator 1 - Valid common-mode range extends to ground; tolerates inputs up to VCC. |
| 5 | IN1+ | Non-inverting input of Comparator 1 - Paired with IN1–; differential swing up to ±36 V permitted. |
| 6 | IN2– | Inverting input of Comparator 2 - Independent channel; shares same electrical specs as IN1±. |
| 7 | IN2+ | Non-inverting input of Comparator 2 - Used for dual-threshold or window-comparator configurations. |
| 8 | GND | Circuit ground reference - Must be connected to system ground plane; serves as return path for all comparator outputs. |
| 9 | IN3+ | Non-inverting input of Comparator 3 - Enables three independent comparisons (e.g., overvoltage, undervoltage, fault flag). |
| 10 | IN3– | Inverting input of Comparator 3 - Supports precision hysteresis via feedback resistor networks. |
| 11 | IN4+ | Non-inverting input of Comparator 4 - Fully isolated channel; no crosstalk with other comparators. |
| 12 | IN4– | Inverting input of Comparator 4 - Used for redundant monitoring or voting logic in fault-tolerant designs. |
| 13 | OUT4 | Open-collector output of Comparator 4 - Compatible with 3.3V/5V/28V pull-up; supports fail-safe shutdown signaling. |
| 14 | OUT3 | Open-collector output of Comparator 3 - May be tied to OUT1/OUT2 for OR'ed alarm outputs. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-38535 Class B qualification | Guarantees screening for burn-in, temperature cycling, and life testing - required for flight-critical hardware acceptance. |
| Extended temperature range (–55°C to +125°C) | Validated operation across launch vibration, vacuum thermal extremes, and re-entry heating profiles. |
| Input common-mode range includes ground | Enables direct comparison of signals referenced to chassis or earth ground without level-shifting circuitry. |
| ±36 V differential input voltage rating | Supports isolation barrier monitoring (e.g., secondary-side sensing in DC/DC converters) without external attenuators. |
| Open-collector outputs with 20 mA sink capability | Permits direct interface to relay drivers, optocouplers, or FPGA I/O banks with configurable pull-up voltages. |
Applications
| Power Sequencing Control | Fault Detection in Avionics |
|---|---|
Use Scenario: Monitoring multiple DC rails (12V, 5V, 3.3V) during cold-start and reset sequences in airborne mission computers. IC Role / Device Role / Timing Role: Quad comparator independently validates each rail against precision reference voltages before enabling downstream logic. Use Value: Prevents erroneous boot-up due to marginal supply conditions; eliminates need for discrete voltage monitors or microcontroller polling. | Use Scenario: Real-time detection of gyroscope bias drift, IMU sensor saturation, or ADC reference deviation in inertial navigation units. IC Role / Device Role / Timing Role: Compares sensor outputs against upper/lower thresholds to generate immediate hardware-level fault flags. Use Value: Enables sub-microsecond response to anomalies - faster than software-based diagnostics and immune to processor lockup. |
| Satellite Solar Array Regulation | Missile Guidance Signal Conditioning |
Use Scenario: Comparing photovoltaic panel output against maximum power point (MPP) references under varying illumination and temperature in LEO orbit. IC Role / Device Role / Timing Role: Four comparators implement MPP tracking algorithm segments and overvoltage crowbar triggers. Use Value: Maintains >98% energy harvest efficiency across ±100°C thermal cycles; radiation-hardened design prevents latch-up in Van Allen belts. | Use Scenario: Thresholding analog seeker head signals (e.g., IR detector outputs) to trigger target acquisition logic in terminal guidance phase. IC Role / Device Role / Timing Role: Provides deterministic, jitter-free decision boundaries for angle-of-arrival estimation and proximity fuse arming. Use Value: Delivers <1.3 µs propagation delay with <5 mV overdrive - critical for sub-meter targeting accuracy at Mach 3+ speeds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM139AUG/883 | Same WG package and MIL-PRF-38535 Class B spec, but ±4 mV max offset voltage (tighter than LM139AWG/883's ±9 mV). | Preferred where ultra-low offset is required for precision reference monitoring (e.g., voltage reference calibration loops). | Select LM139AUG/883 when offset-limited resolution dominates over cost or availability constraints. |
| LM239AWG/883 | Identical pinout and package, but rated for –25°C to +85°C industrial temp range (not –55°C to +125°C); lower screening rigor. | Suitable for non-flight subsystems (e.g., ground test equipment, payload bench simulators) where full space qualification is unnecessary. | Choose LM239AWG/883 for cost-sensitive ground support applications with relaxed environmental requirements. |
Compared with LM139AUG/883 and LM239AWG/883, the LM139AWG/883 provides the broadest operational temperature envelope and highest radiation tolerance among TI's quad comparator offerings in ceramic flatpack, making it the default choice for primary flight hardware where reliability outweighs minor offset trade-offs.
Availability
LM139AWG/883 is available at Aetrix Electronics and suitable for aerospace power management, avionics health monitoring, and satellite telemetry systems requiring stable component supply across long production lifecycles and strict obsolescence control.
Supply support for LM139AWG/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 deep heritage in high-reliability aerospace and defense components.
The LM139 family was engineered specifically for military and space applications requiring guaranteed performance under extreme temperature, shock, vibration, and radiation exposure - delivering deterministic analog decision-making where digital alternatives introduce latency or failure modes.
FAQ
What is the maximum supply voltage rating for LM139AWG/883?
The LM139AWG/883 has an absolute maximum supply voltage of 36 V, but its recommended operating range is 2 V to 30 V per MIL-PRF-38535 specifications. Operation above 30 V is not characterized or guaranteed, and sustained use beyond 30 V may compromise long-term reliability or screening compliance. The LM139AWG/883 datasheet specifies 30 V as the upper limit for functional operation across its full temperature range.
Does LM139AWG/883 support dual-supply operation?
No, the LM139AWG/883 is designed exclusively for single-supply operation. Its input common-mode range extends from ground (0 V) to (VCC – 1.5 V), and it lacks a negative supply pin. Attempting dual-supply connection (e.g., ±15 V) violates absolute maximum ratings and risks permanent damage. All four comparators in the LM139AWG/883 require a single positive rail referenced to ground.
What is the guaranteed input offset voltage specification for LM139AWG/883 over temperature?
The LM139AWG/883 guarantees a maximum input offset voltage of ±9 mV across its full qualified operating temperature range of –55°C to +125°C. This value is specified in Section 6.9 of the TI datasheet SLCS006Z and applies to all units screened to MIL-PRF-38535 Class B. At 25°C only, typical offset is ±2 mV, but design margins must use the worst-case ±9 mV bound.
Can LM139AWG/883 drive a 5V logic input directly?
Yes, the LM139AWG/883 can drive a 5V logic input using an external pull-up resistor to 5V on any open-collector output (e.g., OUT1–OUT4). Its output sink current capability of ≥6 mA at VOL ≤ 400 mV ensures clean TTL/CMOS-compatible low-state signaling. No level-shifter is needed - simply connect the pull-up between the output pin and the 5V rail.
Is LM139AWG/883 pin-compatible with commercial-grade LM339?
Yes, the LM139AWG/883 shares identical pinout and electrical functionality with the commercial LM339 (14-pin DIP/SOIC), LM239, and LM2901 families. However, the WG ceramic flatpack package differs mechanically from plastic DIP or SOIC - PCB layout must accommodate the 19.05 mm × 7.62 mm footprint and solder-seal requirements. Electrical interoperability is maintained; only mechanical mounting and thermal design differ.
LM139AWG/883 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-CSOIC (0.250", 6.35mm Width)
- Series:
- -
- Packaging:
- Tray
- 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
- :
- 14-CFP
LM139AWG/883 FAQ
1.How can I place an order for LM139AWG/883 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM139AWG/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 LM139AWG/883 reliable?
The price and inventory of LM139AWG/883 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM139AWG/883 is usually 5 days.
3.What payment methods are accepted for LM139AWG/883?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM139AWG/883 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM139AWG/883?
LM139AWG/883 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM139AWG/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 LM139AWG/883?
For technical support, including LM139AWG/883 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM139AWG/883 requirements.
6.How does Aetrix verify that LM139AWG/883 is sourced from the original manufacturer or authorized distributors?
All LM139AWG/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 LM139AWG/883 meets industry standards.
7.What is the process for return or replacement of LM139AWG/883?
All LM139AWG/883 units undergo pre-shipment inspection (PSI). If there is an issue with LM139AWG/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 LM139AWG/883 part is unused and in its original packaging.
Return procedure for LM139AWG/883:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM139AWG/883 Tags
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