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Texas Instruments LM339PWRG3
- Part No.:
- LM339PWRG3
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM339PWRG3.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,348
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Product details
Overview
LM339PWRG3 from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply systems. It features ±0.37 mV typical input offset voltage, 200 µA per comparator supply current, 1 µs response time, and operates from 2 V to 36 V. It is used in server PSU overvoltage protection circuits where rail monitoring and fast fault detection are critical.
For engineers reviewing the LM339PWRG3 datasheet, LM339PWRG3 pinout, LM339PWRG3 application, or LM339PWRG3 equivalent, this page delivers verified electrical specs, SOIC-14 package details, real-world use cases in power management, and two validated alternative parts with functional and thermal differentiation.
Technical Context
The LM339PWRG3 implements four independent open-collector comparators with rail-to-rail common-mode input range extending to ground and up to VCC − 2 V. Its internal ESD clamps provide 2 kV HBM robustness, and its propagation delay remains stable across 2 V–36 V supply operation.
Each comparator supports TTL-, MOS-, and CMOS-compatible outputs via external pull-up, with low output saturation voltage (≤400 mV at 4 mA) and high sink capability (21 mA). Input bias current is as low as 3.5 nA (typ), enabling high-impedance sensing without loading source networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct interface with 3.3 V, 5 V, 12 V, and 24 V rails without level-shifting |
| Input Offset Voltage (max) | ±5.5 mV over temperature - ensures reliable threshold detection in industrial ambient conditions |
| Response Time | 1 µs (typ) - supports fast overvoltage/undervoltage response in server PSU and motor drive protection |
| Quiescent Current | 1.2 mA total (0.3 mA/comparator typ) - minimizes standby power in always-on monitoring circuits |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for board-level handling and system integration |
| Output Sink Current | 21 mA (min) - drives standard LEDs, optocouplers, or logic inputs directly without buffer stages |
| Common-Mode Input Range | Ground to VCC − 2 V - allows direct sensing of signals referenced to system ground or mid-rail |
Pinout & Package
LM339PWRG3 is housed in a 14-pin SOIC (PW) package measuring 8.70 mm × 3.90 mm, with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal performance is characterized by RθJA = 111.2 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT2) | Comparator 2 output | Open-collector output requiring external pull-up; sinks up to 21 mA for direct logic interfacing |
| 2 (OUT1) | Comparator 1 output | Independent open-collector output; electrically isolated from other outputs for multi-threshold designs |
| 3 (VCC) | Positive supply | Single supply input supporting 2–36 V; powers all four comparators and internal bias circuitry |
| 4 (IN2−) | Comparator 1 inverting input | High-impedance node (3.5 nA bias current); accepts signals down to ground without clamping diodes |
| 5 (IN2+) | Comparator 1 non-inverting input | Matches IN2− in offset and bias; enables differential or single-ended configurations |
| 6 (IN1−) | Comparator 2 inverting input | Identical electrical behavior to IN2−; supports independent reference or feedback paths |
| 7 (IN1+) | Comparator 2 non-inverting input | Used for threshold setting; stable over full temperature and supply range |
| 8 (IN3−) | Comparator 3 inverting input | Third independent input pair; maintains same offset and noise performance as channels 1–2 |
| 9 (IN3+) | Comparator 3 non-inverting input | Enables triple-rail monitoring (e.g., +12 V, +5 V, +3.3 V) with shared VCC and GND |
| 10 (IN4−) | Comparator 4 inverting input | Fourth channel input; supports redundant sensing or cascaded window-comparator topologies |
| 11 (IN4+) | Comparator 4 non-inverting input | Allows full utilization of quad architecture for complex state-machine triggering |
| 12 (GND) | Negative supply / reference | System ground return; must be low-impedance to maintain input common-mode integrity |
| 13 (OUT4) | Comparator 4 output | Final open-collector output; compatible with 3.3 V or 5 V logic families via appropriate pull-up |
| 14 (OUT3) | Comparator 3 output | Provides fourth independent decision signal; supports parallel fault reporting or voting logic |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces LM339/LM2901 without PCB changes; retains identical SOIC-14 pinout and footprint |
| Extended supply range | 38 V absolute max rating enables safe operation in 24 V industrial and 36 V telecom systems |
| Low input offset drift | ±0.37 mV typical (±5.5 mV max over −40°C to +85°C) ensures stable trip points across temperature |
| Input ruggedness | Dedicated ESD clamps and ±38 V differential input tolerance prevent latch-up during transient events |
| Single-supply compatibility | Common-mode range includes ground - eliminates need for negative supply in sensor interface applications |
Applications
| Vacuum Robot Power Monitoring | Server PSU Overvoltage Protection |
|---|---|
|
Use Scenario: Real-time monitoring of DC bus voltages in vacuum robot motor drivers to prevent insulation breakdown during rapid deceleration. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous validation of +24 V, +12 V, +5 V, and +3.3 V rails against precision references. Use Value: 1 µs response time triggers immediate shutdown before voltage excursion exceeds 5% tolerance, protecting brushless motor controllers. |
Use Scenario: Detecting overvoltage faults on primary and secondary outputs of redundant AC/DC server PSUs before damage occurs to downstream ASICs. IC Role / Device Role / Timing Role: LM339PWRG3 compares each output against trimmed resistor-divider thresholds and asserts fault flags to PMBus controller. Use Value: Open-collector outputs interface directly with I²C-compatible interrupt lines; low 400 mV saturation voltage ensures clean logic-low signaling. |
| Cordless Power Tool Battery Management | Factory Automation Sensor Interface |
|
Use Scenario: Monitoring cell voltage imbalance and pack overtemperature in 18 V Li-ion battery packs used in cordless drills and impact drivers. IC Role / Device Role / Timing Role: Four comparators independently supervise individual cell voltages and thermistor-derived temperature thresholds. Use Value: Input bias current ≤3.5 nA prevents loading of high-resistance voltage dividers, preserving measurement accuracy across 0–100% SOC. |
Use Scenario: Converting analog signals from pressure, flow, and position sensors into digital status bits for PLC input modules in factory automation systems. IC Role / Device Role / Timing Role: LM339PWRG3 acts as a programmable threshold detector, with external resistors setting trip points for 4–20 mA loop receivers. Use Value: Rail-to-rail common-mode input range allows direct connection to 0–10 V sensor outputs without op-amp buffering or level shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQPWRQ1 | Automotive AEC-Q100 Grade 1 qualified (−40°C to +125°C), identical electrical specs but enhanced reliability screening | Required for automotive body control modules and ADAS power domains where qualification is mandatory | Select when automotive qualification, extended temperature operation, or higher production lot traceability is required |
| TLV331IPWR | Single-channel, rail-to-rail input/output, lower supply current (55 µA), but only 5.5 V max supply and no SOIC-14 packaging | Suitable for space-constrained, low-voltage IoT sensor nodes - not a drop-in replacement for quad-channel needs | Choose only for new designs needing ultra-low power and single-comparator functionality; requires PCB redesign |
Compared with LM2901BQPWRQ1, LM339PWRG3 offers broader commercial temperature range and cost advantage for industrial use; compared with TLV331IPWR, it provides true quad-channel integration and 36 V operation essential for power supply supervision.
Availability
LM339PWRG3 is available at Aetrix Electronics and suitable for server PSU overvoltage protection, cordless power tool battery management, and factory automation sensor interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for LM339PWRG3 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 expertise in precision signal conditioning and power management ICs.
The LM339 family was developed for robust, low-cost voltage comparison in industrial and computing power systems, emphasizing wide supply range, ESD resilience, and interoperability across legacy and next-generation designs.
FAQ
What is the maximum supply voltage rating for LM339PWRG3?
The LM339PWRG3 has an absolute maximum supply voltage rating of 38 V, with recommended operating range from 2 V to 36 V. This allows direct use in 24 V industrial systems and 36 V telecom supplies without external regulation. Exceeding 38 V risks permanent damage per TI's Absolute Maximum Ratings table.
Does LM339PWRG3 support rail-to-rail input operation?
Yes, LM339PWRG3 supports rail-to-rail common-mode input operation from ground (V−) up to VCC − 2 V. Either input can extend to VCC without damage, and one input may remain within the valid range while the other exceeds it - enabling flexible threshold referencing in single-supply designs.
Can LM339PWRG3 replace older LM339 variants on existing PCBs?
Yes, LM339PWRG3 is a drop-in replacement for LM339, LM2901, and LM239 in SOIC-14 packages. It shares identical pinout, footprint, and electrical interface - including open-collector outputs and supply voltage compatibility - with improved offset, speed, and ESD performance.
What is the typical input bias current of LM339PWRG3?
The LM339PWRG3 exhibits a typical input bias current of 3.5 nA at 25°C, with a maximum of 25 nA over −40°C to +85°C. This low bias enables accurate sensing from high-impedance sources such as thermistors, photodiodes, or precision resistor dividers without significant error.
Is LM339PWRG3 suitable for automotive applications?
LM339PWRG3 is rated for −40°C to +85°C operation and is not AEC-Q100 qualified. For automotive use, TI recommends LM2901BQPWRQ1 - a functionally identical part with automotive qualification, extended temperature range (−40°C to +125°C), and enhanced reliability testing.
LM339PWRG3 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 ~ 30V, ±1V ~ 15V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM339PWRG3 FAQ
1.How can I place an order for LM339PWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM339PWRG3 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 LM339PWRG3 reliable?
The price and inventory of LM339PWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM339PWRG3 is usually 5 days.
3.What payment methods are accepted for LM339PWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM339PWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM339PWRG3?
LM339PWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM339PWRG3 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 LM339PWRG3?
For technical support, including LM339PWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM339PWRG3 requirements.
6.How does Aetrix verify that LM339PWRG3 is sourced from the original manufacturer or authorized distributors?
All LM339PWRG3 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 LM339PWRG3 meets industry standards.
7.What is the process for return or replacement of LM339PWRG3?
All LM339PWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM339PWRG3, 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 LM339PWRG3 part is unused and in its original packaging.
Return procedure for LM339PWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM339PWRG3 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
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