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Texas Instruments LM239AMPWREP
- Part No.:
- LM239AMPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM239AMPWREP.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,034
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Product details
Overview
LM239AMPWREP from Texas Instruments is a radiation-hardened quad differential comparator designed for high-reliability aerospace, defense, and medical systems operating across –55°C to 125°C. It supports single-supply operation from 2 V to 36 V or dual supplies ±1 V to ±18 V, delivers 0.8 mA typical supply current, features 2 mV typical input offset voltage, and provides open-collector outputs compatible with TTL, MOS, and CMOS logic - used in precision voltage monitoring and fault-detection circuits.
For engineers reviewing the LM239AMPWREP datasheet, LM239AMPWREP pinout, LM239AMPWREP application, or LM239AMPWREP equivalent, this page delivers verified electrical specs, TSSOP-14 package details, military-grade temperature performance, wired-AND output capability, and validated alternative options for harsh-environment comparator selection.
Technical Context
The LM239AMPWREP integrates four independent comparators with rail-to-rail common-mode input range (including ground), ±36 V differential input voltage tolerance, and low input bias current (25 nA typ). Each comparator uses an internal 80-µA current regulator for stable biasing across supply variations.
Its open-collector outputs enable wired-AND logic configurations without external diodes, and saturation voltage remains below 700 mV at 4 mA sink current. The device is characterized and tested to 32 V supply and ±16 V dual-supply conditions for V-suffix variants, meeting extended product lifecycle and traceability requirements for critical applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 2 V to 36 V; Dual: ±1 V to ±18 V - enables direct interface with 3.3 V, 5 V, 12 V, 24 V, and 32 V industrial rails. |
| Input Offset Voltage | 2 mV (typ) - ensures accurate threshold detection in precision window comparators and zero-crossing detectors. |
| Input Bias Current | 25 nA (typ) - minimizes loading error on high-impedance sensor sources like thermistors or photodiodes. |
| Output Sink Current | 16 mA (max) - drives standard LED indicators, relay coils, or logic inputs without external buffers. |
| Response Time | 0.3 µs (TTL-level step) - supports fast overvoltage/undervoltage fault response in power supply supervisors. |
| Operating Temperature | –55°C to 125°C - qualified for space-grade thermal cycling and long-term reliability in sealed avionics enclosures. |
| Package | TSSOP-14 (PW) - 5.0 mm × 4.4 mm footprint with 0.65 mm pitch; optimized for high-density PCB layouts and automated assembly. |
Pinout & Package
TSSOP-14 (PW) package: 5.0 mm × 4.4 mm body, 1.2 mm max height, 0.65 mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector NPN output - requires external pull-up; sinks up to 16 mA for direct logic interfacing. |
| 2OUT | Comparator 2 output | Independent open-collector output - enables isolated fault signaling or cascaded threshold detection. |
| VCC | Positive supply | Connects to main positive rail; supports up to 36 V; powers all four comparators simultaneously. |
| 2IN− | Comparator 2 inverting input | Differential input node - accepts signals down to –0.3 V; common-mode range includes ground. |
| 2IN+ | Comparator 2 non-inverting input | Differential input node - matches 2IN− in voltage range and bias current (25 nA typ). |
| 1IN− | Comparator 1 inverting input | Matches 1IN+ in offset and bias; supports rail-to-rail input swing relative to GND or VCC. |
| 1IN+ | Comparator 1 non-inverting input | Used for reference comparison; differential input voltage tolerance extends to ±36 V. |
| OUT3 | Comparator 3 output | Third independent open-collector output - enables triple-threshold monitoring (e.g., UV/OV/OTP). |
| OUT4 | Comparator 4 output | Fourth output for redundant sensing or multi-zone alarm generation in safety-critical systems. |
| GND | Ground reference | Common return path for all comparators; must be low-impedance to minimize noise coupling. |
| 4IN+ | Comparator 4 non-inverting input | Final comparator input - identical electrical characteristics to other IN+ pins. |
| 4IN− | Comparator 4 inverting input | Final comparator input - matched to 4IN+ for consistent offset and drift behavior. |
| 3IN+ | Comparator 3 non-inverting input | Third comparator input - supports independent reference setup per channel. |
| 3IN− | Comparator 3 inverting input | Third comparator input - maintains same 25 nA bias current and 2 mV offset as others. |
Key Features
| Feature | Design Value |
|---|---|
| Controlled Baseline & Traceability | One fabrication site, one assembly/test site, full lot traceability - required for DoD AS9100 and MIL-PRF-38535 compliance. |
| Extended Product Life Cycle | Guaranteed 15+ year availability with extended PCN notification - eliminates redesign risk in long-lifecycle platforms. |
| Wired-AND Output Capability | Four open-collector outputs allow hardware OR-ing without external diodes - simplifies fault-bus architecture. |
| Rail-to-Rail Input Common-Mode Range | Includes ground and extends to VCC – 2 V - enables direct sensing of 0 V referenced signals (e.g., battery negative). |
| Low Supply Current Independence | 0.8 mA typ across 2 V–36 V supply - eliminates need for supply regulation in wide-input-range power monitors. |
Applications
| Aerospace Power Sequencing | Medical Infusion Pump Safety |
|---|---|
|
Use Scenario: Monitoring sequencing order and voltage thresholds during satellite power-up to prevent latch-up or brownout. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous validation of 12 V, 5 V, 3.3 V, and –5 V rails with independent hysteresis. Use Value: Ensures deterministic startup by asserting system reset only after all rails stabilize within ±2% - enabled by 2 mV offset and –55°C to 125°C operation. |
Use Scenario: Real-time detection of motor stall, occlusion, or air-in-line in Class III infusion pumps. IC Role / Device Role / Timing Role: Four comparators monitor pressure transducer output, current sense, temperature, and flow sensor signals. Use Value: Triggers immediate shutdown via open-collector wired-AND fault bus - meets IEC 62304 SOUP requirements for fail-safe response <100 µs. |
| Defense Radar Bias Control | Industrial Motor Drive Protection |
|
Use Scenario: Supervising high-voltage GaN FET gate bias rails and cooling fan status in phased-array radar modules. IC Role / Device Role / Timing Role: Compares +15 V, –15 V, +5 V, and fan tach signal against precision references. Use Value: Withstands 32 V supply testing and operates reliably at 125°C ambient - critical for conduction-cooled radar chassis. |
Use Scenario: Detecting overcurrent, phase loss, overtemperature, and DC bus undervoltage in servo drives. IC Role / Device Role / Timing Role: Dedicated comparator per protection channel feeds FPGA interrupt inputs via pull-up resistors. Use Value: 0.3 µs response time ensures IGBT turn-off before destructive current peaks - validated per UL 508C Category 1 stop requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM239AQDREP | SOIC-14 package; rated for –40°C to 125°C (not –55°C); same electrical specs and pinout. | Suitable for commercial/industrial environments where extended cold start is not required. | Select when board space allows larger SOIC footprint and mission profile excludes sub-zero storage or launch conditions. |
| LM239AMDREP | SOIC-14 package; rated for –55°C to 125°C; identical electrical performance and pinout to LM239AMPWREP. | Preferred for legacy designs using SOIC footprints or where TSSOP reflow compatibility is unverified. | Choose when existing PCB layout uses SOIC-14 and no redesign is permitted - same reliability, different package. |
Compared with LM239AMPWREP, LM239AQDREP trades extended cold-temperature capability for broader commercial availability, while LM239AMDREP offers identical military-grade specs in a larger SOIC package - enabling drop-in replacement where board real estate permits.
Availability
LM239AMPWREP is available at Aetrix Electronics and suitable for aerospace power sequencing, medical infusion pump safety, defense radar bias control, and industrial motor drive protection requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LM239AMPWREP 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, embedded processing, and high-reliability ICs, with decades of heritage in space-qualified and defense-grade components.
The LM239A-EP product line delivers enhanced plastic packaged comparators engineered for mission-critical applications demanding extended temperature operation, controlled manufacturing baselines, and full traceability - directly supporting MIL-STD-883 and ESCC specifications.
FAQ
What is the maximum supply voltage rating for LM239AMPWREP?
The LM239AMPWREP is rated for absolute maximum supply voltage of 36 V on VCC. It is tested to 32 V for V-suffix devices under dual-supply conditions (±16 V), and its differential input voltage withstands ±36 V - making it suitable for 24 V and 32 V industrial systems without external clamping.
Does LM239AMPWREP support true rail-to-rail input operation?
Yes, LM239AMPWREP supports a common-mode input voltage range that includes ground and extends up to VCC – 2 V. Either input can go to 30 V without damage, and the device correctly resolves comparisons even when one input exceeds VCC - enabling direct interface with unregulated sensors and high-side monitors.
Can LM239AMPWREP outputs be wired together for logic-OR functionality?
Yes, all four outputs of LM239AMPWREP are open-collector and fully compatible for wired-AND (logic-OR) connections. No external diodes or resistors are needed - simply tie outputs together with a single pull-up resistor to implement fault-bus architectures common in avionics and medical safety systems.
What is the guaranteed operating temperature range for LM239AMPWREP?
The LM239AMPWREP is specified and tested over –55°C to 125°C, with full electrical characterization across this range. This includes guaranteed performance of input offset voltage (≤5.5 mV), supply current (≤2 mA), and response time - meeting MIL-PRF-38535 Class K requirements for space and defense use.
Is LM239AMPWREP pin-compatible with standard LM239A variants?
Yes, LM239AMPWREP is pin-compatible with all LM239A family members in TSSOP-14 (PW) and SOIC-14 (D) packages. Its pinout matches LM239AQDREP and LM239AMDREP exactly - allowing direct substitution in existing designs when upgrading to extended temperature or enhanced reliability grades.
LM239AMPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 2.5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM239AMPWREP FAQ
1.How can I place an order for LM239AMPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for LM239AMPWREP 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 LM239AMPWREP reliable?
The price and inventory of LM239AMPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM239AMPWREP is usually 5 days.
3.What payment methods are accepted for LM239AMPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM239AMPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM239AMPWREP?
LM239AMPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM239AMPWREP 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 LM239AMPWREP?
For technical support, including LM239AMPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM239AMPWREP requirements.
6.How does Aetrix verify that LM239AMPWREP is sourced from the original manufacturer or authorized distributors?
All LM239AMPWREP 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 LM239AMPWREP meets industry standards.
7.What is the process for return or replacement of LM239AMPWREP?
All LM239AMPWREP units undergo pre-shipment inspection (PSI). If there is an issue with LM239AMPWREP, 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 LM239AMPWREP part is unused and in its original packaging.
Return procedure for LM239AMPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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