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Texas Instruments LP2901DRE4
- Part No.:
- LP2901DRE4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2901DRE4.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,162
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Product details
Overview
LP2901DRE4 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 output sink current at VO = 2 V and supports CMOS/TTL logic interfacing in battery-powered sensing and control circuits.
For engineers reviewing the LP2901DRE4 datasheet, LP2901DRE4 pinout, LP2901DRE4 application, or LP2901DRE4 equivalent, this page provides verified technical context, package-validated pin functions, real-world use cases in industrial monitoring and power management, and two confirmed alternative comparators with documented functional and thermal differences.
Technical Context
The LP2901DRE4 integrates four independent open-collector comparators with p-n-p input stages enabling ground-sensing capability and common-mode input range extending to GND. Its bimodal output stage operates in Darlington mode (>1.5 V) for high sink current (30 mA) and ground-emitter mode (<0.8 V) for low-voltage pull-down (700 µA).
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 includes reverse-voltage protection on VCC and supports uncommitted collector outputs for wired-OR logic configurations without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - Enables direct interface with 5 V, 12 V, and 24 V industrial rails without regulation. |
| Supply Current (typ) | 60 µA - Supports multi-year battery life in portable sensors and IoT edge nodes. |
| Input Offset Voltage (typ) | ±2 mV - Allows accurate threshold detection within ±10 mV windows at 5 V reference. |
| Output Sink Current | 30 mA at VO = 2 V - Drives LEDs, small relays, or logic inputs directly without external buffers. |
| Operating Temperature | −40°C to 85°C - Qualified for automotive under-hood and industrial control cabinet environments. |
| Input Bias Current (typ) | −2.5 nA - Permits use with >1 MΩ sensor bridges or high-value RC timing networks. |
| Common-Mode Input Range | 0 V to VCC − 2 V - Supports ground-referenced input signals in single-supply systems. |
Pinout & Package
LP2901DRE4 is housed in a 14-pin SOIC (D) package with 1.27 mm pitch, 8.75 mm × 3.91 mm body, and 1.75 mm max height per JEDEC MS-012AB. Pin 1 is marked by a beveled corner or dot; leads are NIPDAU-finished with MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Comparator Inputs (IN+, IN−) | Four independent differential input pairs; each pair accepts signals from 0 V to VCC − 2 V. |
| 3, 6, 10, 13 | Open-Collector Outputs (OUT) | Uncommitted collectors requiring external pull-up; support wired-AND logic and mixed-voltage interfacing. |
| 7 | Ground (GND) | Reference return for all comparators and internal bias network; must be low-impedance connection. |
| 14 | Positive Supply (VCC) | Single power rail input; reverse-voltage protected up to −0.3 V; bypass capacitor recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow supply current | 60 µA typ across full 3–30 V range - eliminates need for shutdown circuitry in always-on monitors. |
| Ground-sensing inputs | Common-mode range includes 0 V - enables direct comparison of sensor outputs referenced to system ground. |
| Bimodal output stage | 30 mA sink @ VO ≥ 1.5 V + 700 µA sink @ VO ≤ 0.4 V - adapts drive strength to load voltage requirements. |
| CMOS/TTL-compatible output | Open-collector structure with 30 mA capability - interfaces directly with 3.3 V/5 V logic families using appropriate pull-up. |
| Reverse-voltage protected VCC | Withstands −0.3 V on supply pin - improves robustness during hot-plug or power-rail sequencing faults. |
Applications
| Industrial Threshold Detection | Portable Battery Monitor |
|---|---|
|
Use Scenario: Monitoring coolant temperature, pressure, or voltage thresholds in PLC I/O modules with 24 V supply rails. IC Role / Device Role / Timing Role: Quadruple comparator performing simultaneous high/low limit checks on analog sensor outputs. Use Value: Single LP2901DRE4 replaces four discrete comparators, reducing BOM count and PCB area while maintaining −40°C to 85°C reliability. |
Use Scenario: Detecting battery charge level, overvoltage, undervoltage, and charger presence in handheld medical devices. IC Role / Device Role / Timing Role: Low-power threshold detector enabling wake-up from sleep mode when battery crosses preset levels. Use Value: 60 µA quiescent current extends standby time; ground-sensing inputs allow direct connection to battery cell taps. |
| Power Supply Sequencing | LED Status Indicator Driver |
|
Use Scenario: Validating correct ramp-up order of multiple DC/DC converter outputs in FPGA or ASIC power systems. IC Role / Device Role / Timing Role: Comparator bank verifying voltage monotonicity and hold-time compliance before enabling downstream logic. Use Value: Pin-for-pin compatibility with LM2901 allows drop-in replacement in legacy designs; 30 mA sink drives optocoupler LEDs directly. |
Use Scenario: Driving red/green/yellow status LEDs on industrial HMI panels powered from 12 V or 24 V rails. IC Role / Device Role / Timing Role: Open-collector output stage sinking LED current without external transistors. Use Value: Eliminates need for discrete MOSFETs or bipolar drivers; bimodal output ensures consistent brightness across varying LED forward voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DR | Same pinout, identical electrical specs, but rated only for 0°C to 70°C ambient. | Not suitable for automotive or extended-temperature industrial deployments. | Select LM2901DR only if operating environment stays within commercial temperature range. |
| TLV3704IDR | Rail-to-rail input, 1 µA supply current, but 5.5 V max supply and no reverse-voltage protection. | Optimized for ultra-low-power 3.3 V systems; incompatible with 12 V/24 V rails or reverse-polarity risk zones. | Choose TLV3704IDR for battery-critical sub-5 V designs where input range and quiescent current outweigh voltage flexibility. |
Compared with LP2901DRE4, LM2901DR sacrifices temperature range for identical cost and footprint, while TLV3704IDR trades supply voltage headroom and protection for nanoscale power efficiency-making LP2901DRE4 the optimal choice for wide-input, ruggedized, single-supply industrial sensing.
Availability
LP2901DRE4 is available at Aetrix Electronics and suitable for industrial automation, automotive subsystem monitoring, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP2901DRE4 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 LP2901DRE4 belongs to TI's legacy precision comparator family engineered for robust single-supply operation in harsh environments-including factory floors, vehicle ECUs, and remote sensor nodes.
FAQ
What is the maximum supply voltage rating for LP2901DRE4?
The LP2901DRE4 has an absolute maximum supply voltage of 36 V, with recommended operation from 3 V to 30 V. Exceeding 30 V may degrade long-term reliability despite surviving short-term stress; sustained use above 30 V is not advised per TI's recommended operating conditions.
Does LP2901DRE4 support dual-supply operation?
Yes, LP2901DRE4 supports split-supply operation (e.g., ±15 V), though it is optimized for single-supply use. When used with dual supplies, the common-mode input range remains referenced to the negative rail, and output behavior follows standard open-collector logic relative to the positive rail.
Can unused comparators in LP2901DRE4 be left floating?
No - all inputs of unused comparators in LP2901DRE4 must be tied to valid voltage levels (typically GND or VCC) to prevent erratic output states and excessive current draw. Leaving inputs floating risks oscillation and increased supply current due to undefined input bias conditions.
Is LP2901DRE4 pin-compatible with LM339?
Yes, LP2901DRE4 is pin-for-pin compatible with LM339, LM239, and LM2901 in SOIC (D) and PDIP (N) packages. This allows direct substitution in existing layouts without PCB changes, provided the extended −40°C to 85°C temperature range meets system requirements.
What is the output configuration of LP2901DRE4?
LP2901DRE4 features four open-collector outputs, each requiring an external pull-up resistor to a defined logic voltage. This configuration enables wired-AND functionality, level translation across different logic families, and direct driving of loads such as LEDs or relay coils when paired with appropriate current-limiting resistors.
LP2901DRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
LP2901DRE4 FAQ
1.How can I place an order for LP2901DRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2901DRE4 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 LP2901DRE4 reliable?
The price and inventory of LP2901DRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2901DRE4 is usually 5 days.
3.What payment methods are accepted for LP2901DRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2901DRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2901DRE4?
LP2901DRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2901DRE4 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 LP2901DRE4?
For technical support, including LP2901DRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2901DRE4 requirements.
6.How does Aetrix verify that LP2901DRE4 is sourced from the original manufacturer or authorized distributors?
All LP2901DRE4 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 LP2901DRE4 meets industry standards.
7.What is the process for return or replacement of LP2901DRE4?
All LP2901DRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LP2901DRE4, 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 LP2901DRE4 part is unused and in its original packaging.
Return procedure for LP2901DRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2901DRE4 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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