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Texas Instruments LP2901DR
- Part No.:
- LP2901DR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2901DR.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,802
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Product details
Overview
LP2901DR from Texas Instruments is a low-power quadruple voltage comparator IC designed for single-supply operation across 3 V to 30 V, featuring ±2 mV input offset voltage (typ), 60 µA supply current (typ), and −40°C to 85°C operating temperature range. It delivers 30 mA sink current at VO = 2 V and supports CMOS/TTL logic interfacing in battery-powered sensing and threshold-detection circuits.
For engineers reviewing the LP2901DR datasheet, LP2901DR pinout, LP2901DR application, or LP2901DR equivalent, this page provides verified electrical specifications, SOIC-14 package details, bimodal output behavior, ground-inclusive common-mode input range, and validated alternatives for industrial control, power monitoring, and analog signal conditioning designs.
Technical Context
The LP2901DR implements four independent comparators with p-n-p input stages enabling common-mode input down to ground and reverse-voltage protected power supply inputs. Its output stage operates in two modes: Darlington mode (30 mA sink at VO ≥ 1.5 V) and ground-emitter mode (700 µA sink at VO ≤ 0.4 V), enabling flexible load driving without external pull-ups.
Input bias current is −2.5 nA (typ) and input offset current is ±0.5 nA (typ), ensuring minimal loading on high-impedance sources. The device maintains stable 60 µA supply current across its full 3–30 V supply range and supports unlimited output short-circuit duration to ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - Enables direct use with 5 V, 12 V, and 24 V industrial rails without regulation. |
| Supply Current (typ) | 60 µA - Supports multi-year battery life in portable threshold detectors and wake-up circuits. |
| Input Offset Voltage (typ) | ±2 mV - Ensures accurate 10 mV-level window detection without calibration in sensor interfaces. |
| Output Sink Current | 30 mA at VO = 2 V - Directly drives LEDs, small relays, or logic inputs without external transistors. |
| Common-Mode Input Range | 0 V to VCC − 2 V - Accepts ground-referenced signals (e.g., thermistor dividers) with no level-shifting. |
| Operating Temperature | −40°C to 85°C - Qualified for automotive cabin, industrial PLC, and outdoor environmental monitoring. |
| Input Bias Current (typ) | −2.5 nA - Minimizes error in high-Z pH sensors, photodiode amplifiers, and precision reference monitoring. |
Pinout & Package
LP2901DR is housed in a 14-pin SOIC (D) package, 3.90 mm × 8.65 mm body size, 1.75 mm max height, with 1.27 mm pitch and RoHS-compliant NiPdAu lead finish. Pin 1 is located at top-left corner with notch or beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 12, 13, 14 | Comparator Inputs (IN+, IN−) | Four independent differential input pairs (1IN+ to 1IN−, etc.) accepting ground-to-VCC−2 V common-mode range. |
| 7 | GND | Ground reference for all comparators and internal bias network; must be low-impedance connection. |
| 8 | VCC | Positive supply input; reverse-voltage protected up to −36 V; bypass capacitor recommended. |
| 9, 10, 11, 13 | Outputs (OUT1–OUT4) | Open-collector NPN outputs capable of sinking 30 mA (Darlington mode) or 700 µA (ground-emitter mode). |
Key Features
| Feature | Design Value |
|---|---|
| Single-Supply Operation | Operates from 3 V to 30 V with ground-referenced inputs-eliminates need for dual supplies in sensor front-ends. |
| Bimodal Output Stage | Switches between high-current Darlington (≥30 mA) and low-voltage ground-emitter (≤0.4 V drop) modes automatically. |
| CMOS/TTL-Compatible Output | Uncommitted collector outputs allow pull-up to any voltage ≤30 V-enables mixed-voltage system interfacing. |
| Ultra-Low Power Consumption | 60 µA typical supply current independent of VCC-critical for always-on battery-powered comparators. |
| Input Protection | Withstands −0.3 V to 36 V input voltage range and ±36 V differential input-robust against ESD and transient overvoltage. |
Applications
| Overvoltage Protection Circuit | Temperature Threshold Monitor |
|---|---|
Use Scenario: Detecting when a 12 V rail exceeds 12.8 V to trigger shutdown or LED alert. IC Role / Device Role / Timing Role: LP2901DR acts as a precision voltage window comparator with hysteresis via feedback resistors. Use Value: ±2 mV offset ensures reliable trip point accuracy without trimming; 30 mA sink directly drives protection MOSFET gate or optocoupler LED. |
Use Scenario: Monitoring NTC thermistor voltage in HVAC control to activate fan above 45°C. IC Role / Device Role / Timing Role: LP2901DR compares thermistor divider output against fixed reference to generate digital enable signal. Use Value: Ground-inclusive input range allows direct connection to thermistor-to-ground circuit; 60 µA quiescent current extends battery life in wireless sensor nodes. |
| Low-Power Wake-Up Detector | Industrial Logic Level Shifter |
Use Scenario: Waking an MCU from deep sleep when light sensor output crosses ambient threshold. IC Role / Device Role / Timing Role: LP2901DR serves as ultra-low-power analog comparator feeding interrupt pin of microcontroller. Use Value: 60 µA supply current enables years of operation on coin cell; open-collector output pulls MCU pin low without additional components. |
Use Scenario: Converting 3.3 V logic signals to 24 V control outputs for solenoid drivers in factory automation. IC Role / Device Role / Timing Role: LP2901DR functions as level-translating comparator with 24 V pull-up on output. Use Value: Output rated for 30 V compliance allows direct 24 V pull-up; input common-mode range includes 0 V enables clean 3.3 V signal sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Wider temp range (0°C to 70°C vs. −40°C to 85°C); higher input offset (±9 mV max vs. ±5 mV max); same SOIC-14 pinout. | Limited to commercial-grade environments; less suitable for automotive or extended-temperature industrial use. | Select LM339DR only if cost sensitivity outweighs temperature and offset requirements. |
| TLV331IDR | Rail-to-rail input; lower supply current (24 µA typ); but single-channel and requires external pull-up; different pinout. | Not pin-compatible; requires PCB redesign; better for ultra-low-power single-threshold detection, not quad-function replacement. | Choose TLV331IDR for new designs prioritizing nanoamp quiescent current and rail-to-rail input-not for LP2901DR drop-in upgrade. |
Compared with LM339DR and TLV331IDR, the LP2901DR uniquely combines extended temperature rating, quad-channel integration, open-collector flexibility, and proven robustness in legacy industrial systems-making it the preferred choice where reliability and compatibility are critical.
Availability
LP2901DR is available at Aetrix Electronics and suitable for industrial control systems, battery-powered instrumentation, and automotive cabin electronics requiring stable component supply across long production lifecycles.
Supply support for LP2901DR 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 performance.
The LP2901DR belongs to TI's legacy precision comparator family, engineered specifically for robust, low-power, single-supply threshold detection in harsh environments-from factory floors to vehicle cabins.
FAQ
What is the maximum supply voltage rating for the LP2901DR?
The LP2901DR has an absolute maximum supply voltage of 36 V, with recommended operating range from 3 V to 30 V. This allows safe deployment in 24 V industrial systems and automotive 12 V/24 V rails while maintaining 60 µA typical supply current. Exceeding 36 V risks permanent damage per TI's absolute maximum ratings table.
Does the LP2901DR support ground-referenced input signals?
Yes, the LP2901DR supports common-mode input voltages down to 0 V (ground), confirmed by its "Common-Mode Input Voltage Includes Ground" specification and VICR = 0 to VCC − 2 V across full temperature range. This enables direct interfacing with sensors like thermistors or potentiometers tied to ground without level-shifting circuitry.
Can multiple LP2901DR outputs be wired together?
Yes, LP2901DR outputs are open-collector and electrically compatible for wired-AND (dot-logic) connections. TI explicitly states "Several outputs can be tied together" in the Application Information section. Ensure shared pull-up resistor value accounts for total sink current of all active outputs-e.g., 10 kΩ for ≤3 outputs at 5 V.
What is the output behavior of the LP2901DR at low voltages?
The LP2901DR exhibits bimodal output behavior: above ~1.5 V, it operates in Darlington mode (30 mA sink at VO = 2 V); below ~0.4 V, it switches to ground-emitter mode (700 µA sink). This transition is smooth and internally managed-no external control needed-and ensures usable low-voltage drive capability without saturation lockup.
Is the LP2901DR pin-compatible with the LM2901?
Yes, the LP2901DR is pin-for-pin compatible with the LM2901, as confirmed in TI's datasheet description stating "Pin-for-Pin Compatible With LM239, LM339, LM2901". Both share identical SOIC-14 pinout, electrical interface, and functional block diagram-enabling direct substitution in existing LM2901 designs without layout changes.
LP2901DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Collector
- Voltage - Supply, Single/Dual (±):
- 3V ~ 30V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 30mA @ 5V
- Current - Output (Typ):
- 100µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LP2901DR FAQ
1.How can I place an order for LP2901DR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2901DR 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 LP2901DR reliable?
The price and inventory of LP2901DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2901DR is usually 5 days.
3.What payment methods are accepted for LP2901DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2901DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2901DR?
LP2901DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2901DR 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 LP2901DR?
For technical support, including LP2901DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2901DR requirements.
6.How does Aetrix verify that LP2901DR is sourced from the original manufacturer or authorized distributors?
All LP2901DR 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 LP2901DR meets industry standards.
7.What is the process for return or replacement of LP2901DR?
All LP2901DR units undergo pre-shipment inspection (PSI). If there is an issue with LP2901DR, 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 LP2901DR part is unused and in its original packaging.
Return procedure for LP2901DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2901DR Tags
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LM2903DR
Texas Instruments
-
LM339DR
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LM339PWR
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LM393DT
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LM2901PWR
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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-
LM2903P
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LM393ADR
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NCX2200GMAZ
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