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Texas Instruments LM2901M/NOPB
- Part No.:
- LM2901M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901M/NOPB.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,871
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Product details
Overview
LM2901M/NOPB from Texas Instruments is a quad low-power, low-offset voltage comparator IC designed for single-supply operation in industrial and embedded systems. It features ±3 mV max offset voltage, 0.8 mA supply current per comparator, input common-mode range extending to ground, open-collector outputs compatible with TTL/CMOS/MOS logic, and operates from 2 V to 36 V DC. It is used in limit detection, analog-to-digital conversion interfaces, and timing circuits requiring rail-to-rail input capability.
For engineers reviewing the LM2901M/NOPB datasheet, LM2901M/NOPB pinout, LM2901M/NOPB application, or LM2901M/NOPB equivalent, this page delivers verified electrical specifications, package mapping (PDIP-14), functional pin roles, real-world use cases, and validated alternative options - all aligned to TI's SNOSBJ3E revision E datasheet.
Technical Context
The LM2901M/NOPB integrates four independent high-gain comparators with PNP input stages enabling input common-mode voltage down to GND on single supplies. Its uncommitted open-collector outputs support wired-OR configurations and level-shifting up to 36 V via external pull-up resistors.
It uses a bias network that maintains stable 0.8 mA total supply current across 2–36 V operation, independent of supply magnitude. Input offset voltage is specified at ±3 mV (max), and output saturation voltage is 250 mV at 4 mA sink current - critical for low-voltage logic interfacing and precision threshold detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V DC - supports wide-input industrial rails and battery-powered systems without dual supplies. |
| Input Offset Voltage | ±3 mV (max) - enables accurate threshold detection within 3 mV tolerance across temperature and supply. |
| Supply Current | 0.8 mA (typical, all four comparators) - ultra-low power suitable for always-on monitoring and portable designs. |
| Input Bias Current | 25 nA (max) - minimizes loading on high-impedance sensor references and RC timing networks. |
| Output Saturation Voltage | 250 mV at 4 mA sink - ensures reliable TTL/CMOS logic LOW recognition even under load. |
| Input Common-Mode Range | Includes GND (0 V) - allows direct sensing of signals referenced to system ground on single supply. |
| Differential Input Voltage | Up to 36 V - permits inputs exceeding V+ without damage, useful in overvoltage protection circuits. |
Pinout & Package
LM2901M/NOPB is packaged in a 14-pin plastic dual in-line package (PDIP) with body size 19.177 mm × 6.35 mm, lead pitch 2.54 mm, and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTPUT2 | Open-collector output of comparator channel 2 - requires external pull-up for logic HIGH; sinks up to 16 mA. |
| 2 | OUTPUT1 | Open-collector output of comparator channel 1 - enables wired-OR logic or level translation to any compatible voltage rail. |
| 3 | V+ | Positive supply input - powers all four comparators; accepts 2–36 V DC or ±1 to ±18 V dual supply. |
| 4 | INPUT1− | Inverting input of comparator channel 1 - used for reference or feedback in hysteresis, window, or zero-crossing circuits. |
| 5 | INPUT1+ | Noninverting input of comparator channel 1 - connects to signal source in basic threshold detection applications. |
| 6 | INPUT2− | Inverting input of comparator channel 2 - supports dual-threshold or differential sensing configurations. |
| 7 | INPUT2+ | Noninverting input of comparator channel 2 - enables independent signal comparison per channel. |
| 8 | INPUT3− | Inverting input of comparator channel 3 - allows multi-channel monitoring (e.g., over/under-voltage, temp zones). |
| 9 | INPUT3+ | Noninverting input of comparator channel 3 - provides full independence for four simultaneous analog decisions. |
| 10 | INPUT4− | Inverting input of comparator channel 4 - supports complex logic functions like priority encoding or alarm staging. |
| 11 | INPUT4+ | Noninverting input of comparator channel 4 - completes quad-channel flexibility for custom analog decision trees. |
| 12 | GND | Ground reference - serves as return path for all comparators and defines input common-mode baseline (0 V). |
| 13 | OUTPUT4 | Open-collector output of comparator channel 4 - identical sink capability and interface behavior as other outputs. |
| 14 | OUTPUT3 | Open-collector output of comparator channel 3 - supports parallel or cascaded comparator architectures. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with GND-referenced inputs | Enables direct interfacing with sensors, potentiometers, and microcontroller ADC references without level-shifting. |
| Open-collector outputs | Permits wired-OR logic, flexible pull-up voltage selection (up to 36 V), and compatibility with TTL, CMOS, ECL, and MOS. |
| Low 0.8 mA supply current | Reduces thermal load and extends battery life in portable instrumentation and remote monitoring nodes. |
| ±3 mV max input offset voltage | Ensures consistent switching thresholds across channels and temperature (−40°C to +85°C operating range). |
| 25 nA max input bias current | Preserves accuracy in high-impedance voltage divider networks and RC-based timing circuits. |
Applications
| Limit Comparators | Analog-to-Digital Conversion |
|---|---|
|
Use Scenario: Monitoring battery voltage against upper/lower thresholds to trigger charge/discharge control or low-battery alerts. IC Role / Device Role / Timing Role: Quad comparator acting as independent overvoltage, undervoltage, and fault detectors with discrete logic-level outputs. Use Value: Eliminates need for dedicated ADC + firmware polling; provides deterministic, sub-microsecond response to voltage excursions. |
Use Scenario: Converting linear sensor outputs (e.g., thermistor, light-dependent resistor) into digital on/off states for HVAC or lighting control. IC Role / Device Role / Timing Role: Comparator channel configured as 1-bit quantizer with hysteresis to reject noise and prevent chatter at threshold crossings. Use Value: Achieves cost-effective, low-power digitization without MCU resource overhead or external precision references. |
| Pulse & Time Delay Generation | Multivibrator Circuits |
|
Use Scenario: Generating fixed-duration pulses or adjustable delays in motor control sequencing or safety interlock timers. IC Role / Device Role / Timing Role: One-shot multivibrator built using comparator with RC timing network and input lock-out to prevent retriggering. Use Value: Provides predictable, repeatable delay timing (ns to ms range) with no crystal or external clock required. |
Use Scenario: Implementing bistable latches or astable oscillators for LED flashers, clock generation, or state machines in legacy hardware. IC Role / Device Role / Timing Role: Dual-comparator configuration forming Schmitt trigger or cross-coupled latch with hysteresis-defined switching points. Use Value: Delivers robust, low-component-count logic functionality without programmable devices or external gates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | SOIC-14 package; same electrical specs but rated for 0°C to +70°C (vs. LM2901M/NOPB's −40°C to +85°C). | Suitable for commercial-grade applications; not recommended for extended industrial temperature environments. | Select LM339DR only when ambient temperature stays within 0–70°C and surface-mount assembly is preferred. |
| LM239DT | SOIC-14; identical −40°C to +85°C rating, but input offset voltage max is 5 mV (vs. 3 mV for LM2901M/NOPB). | Acceptable where ±5 mV threshold tolerance suffices; less precise for tight-margin sensing. | Choose LM239DT when cost or footprint drives SOIC preference and ±5 mV offset meets system accuracy requirements. |
Compared with LM339DR and LM239DT, LM2901M/NOPB offers the widest industrial temperature range (−40°C to +85°C) and tightest guaranteed offset (±3 mV), making it optimal for automotive subsystems, factory automation, and outdoor equipment where reliability and precision are critical.
Availability
LM2901M/NOPB is available at Aetrix Electronics and suitable for industrial control panels, battery management systems, and sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2901M/NOPB 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-efficient IC design.
The LM2901M/NOPB belongs to TI's LMx39-N quad comparator family, engineered for robust single-supply operation in industrial, automotive, and instrumentation applications where ground-sensing, low power, and logic compatibility are essential.
FAQ
What is the operating temperature range of the LM2901M/NOPB?
The LM2901M/NOPB is rated for operation from −40°C to +85°C, making it suitable for industrial environments, automotive under-hood applications, and outdoor electronics where extended thermal stability is required. This range is confirmed in TI's SNOSBJ3E datasheet Section 6.3 and distinguishes it from commercial variants like LM339 (0°C to +70°C).
Does the LM2901M/NOPB require dual power supplies?
No, the LM2901M/NOPB is specifically designed for single-supply operation with an input common-mode voltage range that includes ground (0 V), eliminating the need for dual supplies in most applications. It operates from 2 V to 36 V DC on V+, with GND as the reference - a key feature highlighted in the "Description" section of the datasheet.
What logic families is the LM2901M/NOPB compatible with?
The LM2901M/NOPB's open-collector outputs are compatible with TTL, DTL, ECL, MOS, and CMOS logic systems when used with appropriate pull-up resistors. Its output saturation voltage of 250 mV at 4 mA ensures reliable LOW-level recognition across these families, as specified in Section 1 "Features" and Table 6.6 of the datasheet.
Can unused comparator channels on the LM2901M/NOPB be left floating?
No - all inputs of unused comparators must be tied to a valid voltage within the common-mode range (e.g., to GND or V+) to prevent erratic output behavior and excessive supply current. The datasheet explicitly recommends connecting unused inputs to the negative supply (GND in single-supply use) to ensure stable quiescent operation.
What is the maximum sink current capability of each output in the LM2901M/NOPB?
Each open-collector output of the LM2901M/NOPB can sink up to 16 mA while maintaining saturation voltage ≤400 mV (typical 250 mV at 4 mA). This is verified in Table 6.6 (Electrical Characteristics) and supports direct driving of LEDs, relays, or logic inputs without additional buffer stages.
LM2901M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 7mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM2901M/NOPB FAQ
1.How can I place an order for LM2901M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901M/NOPB 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 LM2901M/NOPB reliable?
The price and inventory of LM2901M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901M/NOPB is usually 5 days.
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4.How is shipping managed for LM2901M/NOPB?
LM2901M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901M/NOPB 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 LM2901M/NOPB?
For technical support, including LM2901M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901M/NOPB requirements.
6.How does Aetrix verify that LM2901M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2901M/NOPB 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 LM2901M/NOPB meets industry standards.
7.What is the process for return or replacement of LM2901M/NOPB?
All LM2901M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2901M/NOPB, 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 LM2901M/NOPB part is unused and in its original packaging.
Return procedure for LM2901M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901M/NOPB 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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