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Texas Instruments LM239PWRG4
- Part No.:
- LM239PWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM239PWRG4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
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Product details
Overview
LM239PWRG4 from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±5.5 mV max input offset voltage (over temperature), 1.3 µs typical response time, and rail-to-rail input capability including ground - used in overvoltage detection, motor control feedback, and power supply sequencing circuits.
For engineers reviewing the LM239PWRG4 datasheet, LM239PWRG4 pinout, LM239PWRG4 application, or LM239PWRG4 equivalent, this page delivers verified specifications, SOIC-14 package layout, real-world use cases in industrial power systems, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM239PWRG4 implements four independent open-collector comparators with common-mode input range extending to ground and differential input tolerance up to ±36 V. Its propagation delay is specified at 1.3 µs under 100 mV input step with 5 mV overdrive, and it supports TTL/MOS/CMOS-compatible outputs via external pull-up.
It operates without phase inversion across its full common-mode range and maintains stable quiescent current (0.8–2.5 mA total) independent of supply voltage. Input bias current is rated at –25 nA (typ), enabling high-impedance sensing in battery-powered and precision threshold-detection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial power rails without level-shifting. |
| Input Offset Voltage (max) | ±5.5 mV over –25°C to +85°C - ensures reliable threshold detection within ±6 mV accuracy across commercial temperature range. |
| Response Time (typ) | 1.3 µs - supports fast edge detection in motor commutation timing and UPS transfer switching. |
| Input Bias Current (max) | –250 nA - minimizes loading on high-impedance sensor networks (e.g., thermistor dividers, photodiode interfaces). |
| Output Type | Open-collector - allows wired-OR logic, flexible voltage-level translation, and direct interface to 3.3 V/5 V/12 V logic families via external pull-up. |
| ESD Rating (HBM) | 2000 V - meets standard handling requirements for automated assembly in Class 1B ESD environments. |
| Quiescent Current (max) | 2.5 mA - supports low-power system monitoring in always-on subsystems without compromising speed. |
Pinout & Package
LM239PWRG4 is housed in a 14-pin SOIC (PW) package measuring 8.70 mm × 3.90 mm, with gull-wing leads and surface-mount compatibility. Thermal performance is characterized by RθJA = 111.2°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up; sinks up to 16 mA. |
| 2 | IN1– | Inverting input of Comparator 1 - accepts voltages from ground to VCC – 2 V. |
| 3 | IN1+ | Non-inverting input of Comparator 1 - same common-mode range as IN1–. |
| 4 | VCC | Positive supply rail - supports 2 V to 36 V; decoupling capacitor recommended near pin. |
| 5 | OUT2 | Open-collector output of Comparator 2 - electrically identical to OUT1; supports wired-OR. |
| 6 | IN2– | Inverting input of Comparator 2 - independent channel; no crosstalk with other comparators. |
| 7 | IN2+ | Non-inverting input of Comparator 2 - usable for differential or single-ended reference comparison. |
| 8 | GND | Ground reference - must be connected directly to system ground plane for noise immunity. |
| 9 | IN3+ | Non-inverting input of Comparator 3 - supports multi-threshold monitoring (e.g., undervoltage/overvoltage windows). |
| 10 | IN3– | Inverting input of Comparator 3 - paired with IN3+ for third independent decision node. |
| 11 | OUT3 | Open-collector output of Comparator 3 - shares no internal resources with OUT1/OUT2. |
| 12 | IN4+ | Non-inverting input of Comparator 4 - enables fourth independent analog decision path. |
| 13 | IN4– | Inverting input of Comparator 4 - fully isolated; supports dedicated fault-sense channel. |
| 14 | OUT4 | Open-collector output of Comparator 4 - capable of driving LEDs, optocouplers, or logic inputs directly. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input including ground | Enables direct sensing of 0 V referenced signals (e.g., current-sense amplifiers, battery terminals) without level-shifting circuitry. |
| Differential input voltage range ±36 V | Permits comparator use in high-side sensing applications where inputs swing beyond supply rails - e.g., 48 V bus monitoring with 12 V logic. |
| Open-collector outputs | Allows flexible voltage translation (e.g., 3.3 V MCU interfacing to 24 V PLC I/O) and hardware OR-ing of multiple fault conditions. |
| Low input bias current (–25 nA typ) | Reduces measurement error in high-impedance divider networks used for precision voltage thresholds in medical or test equipment. |
| Stable quiescent current vs. supply voltage | Ensures predictable power budgeting across wide input ranges - critical for unregulated adapter-fed systems like cordless tool chargers. |
Applications
| Overvoltage Protection Circuit | Motor Phase Monitoring |
|---|---|
|
Use Scenario: Detecting DC bus voltage exceeding 30 V in a 24 V industrial drive to trigger shutdown before MOSFET failure. IC Role / Device Role / Timing Role: Quad comparator compares scaled bus voltage against four independent thresholds (UVLO, nominal, OV warning, hard OV trip) using resistor dividers. Use Value: Enables graded response (warning → reduce load → disable PWM → latch off) with single LM239PWRG4 instead of discrete logic or microcontroller polling. |
Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation for sensorless control in HVAC blowers. IC Role / Device Role / Timing Role: Three comparators condition phase voltages into clean digital edges; fourth validates commutation sequence timing. Use Value: Achieves <1.3 µs propagation delay per channel, supporting >20 kHz electrical frequency operation without software overhead. |
| Server PSU Sequencing | Appliance Door Interlock |
|
Use Scenario: Enforcing strict power-up order (12 V → 5 V → 3.3 V → VTT) in rack-mounted server power supplies. IC Role / Device Role / Timing Role: Each comparator monitors one rail's presence and asserts enable signals only when prior rails meet tolerance and timing windows. Use Value: Eliminates need for dedicated PMIC or FPGA-based sequencers - reduces BOM cost and improves startup reliability. |
Use Scenario: Verifying mechanical door closure before enabling microwave cavity magnetron in consumer ovens. IC Role / Device Role / Timing Role: One comparator checks microswitch voltage; others validate interlock loop continuity and safety timer timeout. Use Value: Meets IEC 60335-1 requirement for dual-redundant door sensing using a single, AEC-Q200–capable component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM239DR | Same SOIC-14 package, identical electrical specs, but rated for –25°C to +85°C (vs. LM239PWRG4's –25°C to +85°C); identical pinout and footprint. | No difference - fully interchangeable in commercial-temperature industrial designs. | Select LM239DR if sourcing from alternate TI distribution channels; no design change required. |
| LM339PWR | SOIC-14 package, wider temp range (0°C to +70°C), higher max input offset (±9 mV), and slower response (1.3 µs same, but less consistent at extremes). | Not suitable for extended-temperature environments (e.g., outdoor telecom cabinets); marginally less accurate in precision thresholding. | Choose LM339PWR only for cost-sensitive, non-critical applications where 0°C minimum ambient is guaranteed. |
Compared with LM239DR and LM339PWR, LM239PWRG4 offers identical form-fit-function to LM239DR while providing TI's enhanced green packaging (lead-free, RoHS-compliant) and traceable lot control - making it preferred for production programs requiring compliance documentation and long-term supply stability.
Availability
LM239PWRG4 is available at Aetrix Electronics and suitable for overvoltage protection, motor control feedback, and server PSU sequencing requiring stable component supply across industrial temperature ranges and multi-year production cycles.
Supply support for LM239PWRG4 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.
LM239PWRG4 belongs to TI's legacy quad comparator product line, engineered for robustness in industrial power systems, factory automation, and appliance control - emphasizing reliability, wide supply range, and ease of integration without external support components.
FAQ
What is the operating temperature range for LM239PWRG4?
The LM239PWRG4 is specified for operation from –25°C to +85°C. This commercial-grade temperature range aligns with standard industrial environments such as programmable logic controllers, motor drives, and power supply units where ambient conditions remain within these limits. The device maintains all key parameters-including input offset voltage, response time, and supply current-within datasheet limits across this full range. LM239PWRG4 does not support extended or automotive temperature grades.
Does LM239PWRG4 require external pull-up resistors on its outputs?
Yes, LM239PWRG4 features open-collector outputs and requires external pull-up resistors to define the high-state voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on rise-time requirements and load capacitance. Pull-up to 3.3 V, 5 V, or 12 V is supported, enabling interoperability with mixed-voltage systems. Without a pull-up, outputs remain floating and cannot drive logic-high states - a fundamental design requirement confirmed in TI's official application notes for LM239PWRG4.
Can LM239PWRG4 be used with a single 3.3 V supply?
Yes, LM239PWRG4 operates down to 2 V supply, making it fully compatible with 3.3 V systems. At 3.3 V, it delivers 1.3 µs typical response time, ±5.5 mV max input offset, and retains rail-to-rail input capability - allowing direct interface to 3.3 V ADC references or microcontroller GPIOs. Input common-mode range extends from ground to VCC – 2 V (i.e., 0 V to 1.3 V), so level-shifting may be needed for signals above 1.3 V unless using the differential input tolerance feature. LM239PWRG4 performs reliably in this configuration per TI's characterization data.
How does LM239PWRG4 differ from LM339B in terms of performance?
LM239PWRG4 is a legacy part with ±9 mV max input offset (25°C), 1.3 µs response, and 2–30 V supply range, while LM339B offers ±0.37 mV typical offset, 1 µs response, 2–36 V operation, and 2 kV HBM ESD rating. LM339B also supports –40°C to +85°C operation and improved input ruggedness. LM239PWRG4 is not a drop-in replacement for LM339B due to differing offset, speed, and temperature specs - though both share SOIC-14 packaging. LM239PWRG4 remains valid for cost-sensitive, non-precision applications where its established qualification meets requirements.
Is LM239PWRG4 pin-compatible with LM2901?
Yes, LM239PWRG4 is pin-compatible with LM2901 in SOIC-14 (PW) package - both follow identical 14-pin layout per Figure 5-1 in TI's LMx39 family datasheet. Pin functions (IN1±, OUT1, VCC, GND, etc.) match exactly. However, LM2901 specifies –40°C to +125°C operation and tighter input offset (±7 mV max), whereas LM239PWRG4 is rated –25°C to +85°C with ±9 mV max offset. Electrical behavior is functionally equivalent, but thermal and precision margins differ - LM239PWRG4 can replace LM2901 in commercial-temp designs without PCB changes.
LM239PWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -25°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM239PWRG4 FAQ
1.How can I place an order for LM239PWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM239PWRG4 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 LM239PWRG4 reliable?
The price and inventory of LM239PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM239PWRG4 is usually 5 days.
3.What payment methods are accepted for LM239PWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM239PWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM239PWRG4?
LM239PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM239PWRG4 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 LM239PWRG4?
For technical support, including LM239PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM239PWRG4 requirements.
6.How does Aetrix verify that LM239PWRG4 is sourced from the original manufacturer or authorized distributors?
All LM239PWRG4 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 LM239PWRG4 meets industry standards.
7.What is the process for return or replacement of LM239PWRG4?
All LM239PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM239PWRG4, 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 LM239PWRG4 part is unused and in its original packaging.
Return procedure for LM239PWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM239PWRG4 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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