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Texas Instruments LM2901PWG4
- Part No.:
- LM2901PWG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901PWG4.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,719
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Product details
Overview
LM2901PWG4 from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 1 µs propagation delay, 2 kV HBM ESD rating, and rail-to-rail input capability down to ground-used in motor drive fault detection, server PSU overvoltage monitoring, and industrial sensor thresholding.
For engineers reviewing the LM2901PWG4 datasheet, LM2901PWG4 pinout, LM2901PWG4 application, or LM2901PWG4 equivalent, this page delivers verified specifications, SOIC-14 package details, real-world use cases, and validated alternative options aligned with TI's LM2901B family documentation.
Technical Context
The LM2901PWG4 implements four independent open-collector comparators with common-mode input range extending to ground and differential input tolerance up to ±38 V. Its B-version architecture integrates dedicated ESD clamps and optimized input stage design to achieve lower offset, faster response, and improved ruggedness versus legacy LM2901 variants.
It operates across –40°C to +125°C ambient temperature, draws only 0.8–1.6 mA total quiescent current (supply-voltage and temperature dependent), and maintains output compatibility with TTL, MOS, and CMOS logic families via its open-drain outputs requiring external pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and automotive power rails without regulation |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +125°C - enables precise threshold detection in temperature-variable environments |
| Propagation Delay | 1 µs (typ) at 5 V supply - suitable for real-time overcurrent/overvoltage protection circuits |
| Input Bias Current (max) | 50 nA over full temp range - minimizes loading on high-impedance sensor sources |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional board-level protection |
| Output Type | Open-collector - allows wired-OR logic, level translation, and flexible pull-up voltage selection |
| Common-Mode Input Range | Ground to (VCC – 2 V) - supports direct interface with grounded sensors and low-side current sensing |
Pinout & Package
LM2901PWG4 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. The exposed pad variant is not used in this part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Open-collector output of Comparator 1 - requires external pull-up; sinks up to 21 mA |
| 2 | OUT2 | Open-collector output of Comparator 2 - electrically identical to OUT1; supports parallel wiring |
| 3 | VCC | Positive supply pin - accepts 2 V to 36 V; powers all four comparators |
| 4 | IN2– | Inverting input of Comparator 1 - referenced against IN2+ to determine output state |
| 5 | IN2+ | Non-inverting input of Comparator 1 - accepts signals within common-mode range (GND to VCC–2 V) |
| 6 | IN1– | Inverting input of Comparator 2 - shares same electrical characteristics as IN2– |
| 7 | IN1+ | Non-inverting input of Comparator 2 - supports rail-to-rail input down to ground |
| 8 | IN3– | Inverting input of Comparator 3 - fully independent; no internal coupling between channels |
| 9 | IN3+ | Non-inverting input of Comparator 3 - usable across full specified common-mode range |
| 10 | IN4– | Inverting input of Comparator 4 - tolerant of differential inputs up to ±38 V |
| 11 | IN4+ | Non-inverting input of Comparator 4 - immune to latch-up under overvoltage transients |
| 12 | GND | Negative supply reference - must be connected to system ground; serves as return path for all outputs |
| 13 | OUT4 | Open-collector output of Comparator 4 - compatible with 3.3 V, 5 V, or 12 V pull-up networks |
| 14 | OUT3 | Open-collector output of Comparator 3 - functionally identical to OUT1/OUT2/OUT4 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to ground and up to VCC – 2 V - eliminates need for level-shifting in low-voltage sensor interfaces |
| 2 kV HBM ESD protection | Dedicated on-chip clamps - reduces risk of field failure during assembly or end-user handling |
| 1 µs propagation delay | Measured with 5 mV overdrive - enables fast response in overvoltage lockout and PWM fault circuits |
| 0.37 mV typical input offset | At 25°C, 5 V supply - improves accuracy in precision window comparators and battery voltage monitors |
| Single-supply operation (2–36 V) | No dual-rail requirement - simplifies power architecture in industrial PLCs and motor drives |
| Open-collector outputs | Supports wired-OR configuration and mixed-voltage system interfacing - e.g., 3.3 V logic controlling 24 V loads |
Applications
| Motor Drive Protection | Server Power Supply Monitoring |
|---|---|
|
Use Scenario: Detecting phase current imbalance or overtemperature shutdown signals in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: Quad comparator compares sensed analog signals (current shunt, thermistor) against fixed thresholds; outputs drive latch or MCU interrupt lines. Use Value: Enables sub-microsecond fault response using LM2901PWG4's 1 µs propagation delay and rail-to-rail input, improving IGBT/SiC FET reliability. |
Use Scenario: Monitoring +12 V, +5 V, +3.3 V, and standby rails in redundant server PSUs for OVP/UVP/fault sequencing. IC Role / Device Role / Timing Role: Each comparator independently supervises one rail; open-collector outputs feed OR'd fault bus to system manager. Use Value: LM2901PWG4's 2–36 V supply range and ground-referenced inputs simplify multi-rail monitoring without auxiliary supplies. |
| Industrial Sensor Interface | Appliance Safety Control |
|
Use Scenario: Converting analog outputs from pressure, flow, or position sensors into digital logic levels for PLC input modules. IC Role / Device Role / Timing Role: LM2901PWG4 acts as analog-to-digital threshold detector; hysteresis added externally to prevent chatter near trip points. Use Value: Low 50 nA max input bias current avoids signal degradation when interfacing with high-Z sensors like piezoresistive bridges. |
Use Scenario: Implementing door interlock, temperature cutoff, and water-level detection in washing machines and dishwashers. IC Role / Device Role / Timing Role: Four independent comparators monitor multiple safety-critical conditions simultaneously; outputs feed microcontroller GPIOs or discrete logic. Use Value: –40°C to +125°C operating range ensures reliable operation inside hot appliance enclosures; 2 kV ESD rating withstands humid environment handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DR | Same LM2901B silicon in SOIC-14 (D package); identical specs but different thermal resistance (RθJA = 111.2°C/W vs. PW's 111.2°C/W - same value per TI doc) | No functional difference; D and PW packages share identical pinout and footprint dimensions per JEDEC | Select LM2901DR if standard SOIC-14 sourcing or alternate tape-and-reel format is preferred |
| LM2901QPWRQ1 | Automotive-grade (AEC-Q100 qualified); same electrical specs but rated for –40°C to +125°C with enhanced process controls and traceability | Required for automotive body control modules or ADAS power domains where qualification is mandatory | Choose LM2901QPWRQ1 for automotive production; LM2901PWG4 remains optimal for industrial/commercial designs |
Compared with LM2901DR and LM2901QPWRQ1, the LM2901PWG4 offers identical performance in commercial-temperature applications while providing TI's standard G4 suffix marking and broad global distribution-making it ideal for cost-sensitive industrial systems where AEC-Q100 is unnecessary.
Availability
LM2901PWG4 is available at Aetrix Electronics and suitable for motor drive protection, server power supply monitoring, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2901PWG4 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The LM2901B family-including LM2901PWG4-is engineered for robust, single-supply comparator applications in harsh environments such as factory automation, power conversion, and appliance control systems.
FAQ
What is the maximum supply voltage for LM2901PWG4?
The LM2901PWG4 supports an absolute maximum supply voltage of 38 V, with recommended operation from 2 V to 36 V. This wide range allows direct connection to unregulated 24 V industrial rails or 36 V battery systems without external regulators, and the device maintains specified performance across the full range per TI's LM2901B datasheet Section 6.1 and 6.4.
Does LM2901PWG4 require dual power supplies?
No, LM2901PWG4 operates from a single supply only. Its input common-mode range includes ground and extends to VCC – 2 V, and its open-collector outputs interface cleanly with any pull-up voltage-eliminating need for negative rails. This single-supply capability is confirmed in the Functional Description (Section 7.1) and Recommended Operating Conditions (Section 6.4) of the official datasheet.
What is the input offset voltage specification for LM2901PWG4?
The LM2901PWG4 has a typical input offset voltage of ±0.37 mV at 25°C and 5 V supply, with a maximum of ±5.5 mV over the full –40°C to +125°C temperature range. These values are explicitly listed in Section 6.8 (Electrical Characteristics for LM2901B) of the TI datasheet and apply directly to the LM2901PWG4 as a member of the LM2901B family.
Can LM2901PWG4 replace older LM2901 variants on existing PCBs?
Yes, LM2901PWG4 is a drop-in replacement for LM2901, LM2901A, and LM2901V in SOIC-14 (PW) packages. It matches pinout, footprint, and electrical behavior while improving offset, speed, and ESD rating. TI confirms this compatibility in the "B-version is drop-in replacement" statement under Features (Section 1) and Family Comparison Table (Section 4).
What output configuration does LM2901PWG4 use?
LM2901PWG4 features open-collector outputs on all four comparators. Each output requires an external pull-up resistor to a defined logic-high voltage-enabling wired-OR logic, level translation, and flexible interfacing with 3.3 V, 5 V, or higher logic families. This is documented in Section 1 (Features), Section 5 (Pin Functions), and Section 6.8 (VOL, IOL) of the TI datasheet.
LM2901PWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 7mV @ 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:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901PWG4 FAQ
1.How can I place an order for LM2901PWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901PWG4 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 LM2901PWG4 reliable?
The price and inventory of LM2901PWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901PWG4 is usually 5 days.
3.What payment methods are accepted for LM2901PWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901PWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901PWG4?
LM2901PWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901PWG4 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 LM2901PWG4?
For technical support, including LM2901PWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901PWG4 requirements.
6.How does Aetrix verify that LM2901PWG4 is sourced from the original manufacturer or authorized distributors?
All LM2901PWG4 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 LM2901PWG4 meets industry standards.
7.What is the process for return or replacement of LM2901PWG4?
All LM2901PWG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901PWG4, 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 LM2901PWG4 part is unused and in its original packaging.
Return procedure for LM2901PWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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