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Texas Instruments LM2903M/NOPB
- Part No.:
- LM2903M/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2903M/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,987
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Product details
Overview
LM2903M/NOPB from Texas Instruments is a dual, low-power, low-offset voltage comparator IC designed for single- or dual-supply operation in precision threshold detection and analog-to-digital interface circuits. It delivers ±3 mV max input offset voltage, 0.4 mA supply current at 5 V, and rail-to-rail input common-mode range including ground - enabling accurate sensing near 0 V in battery-powered and industrial control systems.
For engineers reviewing the LM2903M/NOPB datasheet, LM2903M/NOPB pinout, LM2903M/NOPB application, or LM2903M/NOPB equivalent, key selection considerations include its open-collector outputs compatible with TTL/CMOS logic, wide 2.0–36 V supply range, 25 nA input bias current, and SOIC-8 packaging suitable for space-constrained PCB layouts.
Technical Context
The LM2903M/NOPB integrates two independent PNP-input comparators with open-collector NPN output stages, supporting both single-supply (2.0–36 V) and split-supply (±1.0–±18 V) configurations. Its input common-mode voltage extends to ground and up to V+ − 1.5 V, enabling direct interfacing with low-voltage sensors and reference sources without level-shifting.
Each comparator features 25 nA typical input bias current, ±5 nA input offset current, and 250 mV saturation voltage at 4 mA sink load - ensuring minimal loading on high-impedance inputs and low-voltage logic compatibility. The device operates across −40°C to +85°C and exhibits stable performance over full supply voltage range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 36 V single supply or ±1.0 V to ±18 V dual supply - supports wide-range industrial and automotive power rails. |
| Input Offset Voltage | ±3 mV max - enables precise threshold detection with <1% error at 300 mV reference levels. |
| Supply Current | 0.4 mA typical at 5 V - allows multi-year battery life in portable monitoring devices. |
| Input Bias Current | 25 nA typical - permits use with >1 MΩ sensor networks and high-impedance voltage dividers. |
| Output Saturation Voltage | 250 mV at 4 mA - ensures reliable low-state logic recognition with standard pull-up resistors. |
| Input Common-Mode Range | Includes ground to V+ − 1.5 V - eliminates need for negative supply when sensing near 0 V. |
| Response Time | 1.5 μs typical - sufficient for DC to ~100 kHz signal monitoring and basic timing functions. |
Pinout & Package
LM2903M/NOPB is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm), optimized for automated assembly and thermal performance in industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Open-collector output, Channel A | Sinks up to 16 mA; requires external pull-up for logic HIGH; enables wired-OR and level translation. |
| −INA (Pin 2) | Inverting input, Channel A | Accepts reference or feedback signal; high-impedance node with 25 nA bias current. |
| +INA (Pin 3) | Non-inverting input, Channel A | Accepts sensed signal; common-mode range includes ground for single-supply zero-crossing detection. |
| GND (Pin 4) | Ground reference | Return path for both comparators and internal bias network; serves as V− in single-supply mode. |
| +INB (Pin 5) | Non-inverting input, Channel B | Independent input for second threshold comparison; identical electrical characteristics to Pin 3. |
| −INB (Pin 6) | Inverting input, Channel B | Supports dual-sensor monitoring or hysteresis feedback without additional components. |
| OUTB (Pin 7) | Open-collector output, Channel B | Functionally identical to Pin 1; allows independent control of two digital outputs from one IC. |
| V+ (Pin 8) | Positive supply | Accepts 2.0–36 V; powers both comparators; supply current independent of voltage magnitude. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply ground-sensing capability | Input common-mode range includes 0 V - enables direct battery voltage monitoring and zero-crossing detection without negative rail. |
| Low quiescent current | 0.4 mA at 5 V - reduces system power budget by >90% vs. legacy comparators, critical for always-on IoT nodes. |
| Logic-compatible open-collector outputs | Sink up to 16 mA with 250 mV saturation - interfaces directly with TTL, CMOS, and microcontroller GPIO pins. |
| Wide supply flexibility | Operates from 2.0 V to 36 V single supply or ±1.0 V to ±18 V dual supply - simplifies design reuse across 3.3 V, 5 V, 12 V, and 24 V platforms. |
| High input impedance | 25 nA input bias current - minimizes loading on precision voltage references and high-resistance sensor bridges. |
Applications
| Battery Voltage Monitor | Industrial Overvoltage Protection |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger cutoff at 4.2 V or 2.8 V thresholds. IC Role / Device Role / Timing Role: Dual comparator performing independent high- and low-voltage limit detection with hysteresis. Use Value: Enables safe, autonomous battery management using only two resistive dividers and one LM2903M/NOPB - no MCU required. |
Use Scenario: Detecting AC line overvoltage (>277 VAC) in industrial motor drives before tripping contactors. IC Role / Device Role / Timing Role: High-side comparator comparing rectified DC bus against scaled reference; triggers fast shutdown. Use Value: Provides sub-millisecond response with ±3 mV offset stability over temperature - avoids false trips during transients. |
| Zero-Crossing Detector | Level-Shifted Logic Interface |
|
Use Scenario: Converting 120 VAC sine wave to clean 5 V square wave for microcontroller timing or TRIAC triggering. IC Role / Device Role / Timing Role: Single comparator with resistor divider and clamping diodes; GND referenced, V+ = 5 V. Use Value: Input common-mode range including ground allows direct AC coupling via capacitor - eliminates isolation transformer. |
Use Scenario: Interfacing 3.3 V microcontroller GPIO to 24 V PLC input modules requiring 10–30 V logic HIGH. IC Role / Device Role / Timing Role: Open-collector output pulled to 24 V; driven LOW by MCU to signal active state. Use Value: 250 mV saturation voltage ensures <1 V drop at 4 mA - guarantees valid LOW level per IEC 61131-2 Type 1 specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Same core architecture and pinout; wider operating temperature range (0°C to +70°C vs. −40°C to +85°C for LM2903M/NOPB). | Targeted for commercial-grade consumer electronics; lacks extended industrial temperature qualification. | Select LM393DR only if ambient temperature stays within 0–70°C and cost is primary constraint. |
| TLV3702IDR | Lower supply current (85 µA), rail-to-rail input/output, but higher offset (±3.5 mV) and limited 2.7–16 V supply range. | Optimized for ultra-low-power battery sensors; not suitable for 24 V industrial rails or high-accuracy thresholding. | Choose TLV3702IDR only when sub-100 µA quiescent current is mandatory and supply voltage is ≤16 V. |
Compared with LM393DR and TLV3702IDR, LM2903M/NOPB uniquely balances industrial temperature range, wide 2–36 V operation, and proven robustness in noisy factory environments - making it the default choice for embedded control and power management where reliability trumps marginal power savings.
Availability
LM2903M/NOPB is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial motor controls, and automotive body electronics requiring stable component supply across long production lifecycles.
Supply support for LM2903M/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 experience in precision signal conditioning and power management ICs.
The LM2903M/NOPB belongs to TI's legacy precision comparator family, engineered for robust, low-cost threshold detection in industrial, automotive, and consumer systems where reliability, wide supply range, and ground-sensing capability are essential.
FAQ
What is the maximum supply voltage for LM2903M/NOPB?
The LM2903M/NOPB supports a maximum supply voltage of 36 V in single-supply mode or ±18 V in dual-supply mode. Absolute maximum differential input voltage is also rated at 36 V, allowing inputs to exceed V+ without damage as long as the other input remains within common-mode range. This makes LM2903M/NOPB suitable for 24 V industrial systems and high-voltage sensing applications.
Does LM2903M/NOPB require a dual power supply?
No, LM2903M/NOPB is fully functional with a single supply - its input common-mode voltage range includes ground, and outputs operate correctly with V+ tied to a positive rail and GND serving as the return. Dual supplies (±1.0 V to ±18 V) are optional and used only when negative input signals must be processed. Most designs use single-supply configuration to simplify power architecture.
Can LM2903M/NOPB drive TTL and CMOS logic directly?
Yes, LM2903M/NOPB outputs are open-collector and compatible with TTL, DTL, ECL, MOS, and CMOS logic families. When paired with an appropriate pull-up resistor (e.g., 10 kΩ to 5 V), it delivers a clean logic HIGH and sinks up to 16 mA for a solid LOW state with only 250 mV saturation voltage - meeting standard logic interface requirements without additional buffers.
What is the input offset voltage specification for LM2903M/NOPB?
The LM2903M/NOPB has a maximum input offset voltage of ±3 mV at 25°C, with typical values around 1–2 mV. This specification is guaranteed across the full operating temperature range of −40°C to +85°C, enabling accurate threshold detection in environments with significant thermal variation - such as under-hood automotive or factory-floor control panels.
Is LM2903M/NOPB RoHS compliant and lead-free?
Yes, LM2903M/NOPB is RoHS compliant and lead-free, as indicated by the "/NOPB" suffix in the part number. Texas Instruments certifies this variant for use in environmentally regulated markets, with full compliance documentation available through TI's product change notifications and material declarations portal.
LM2903M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- 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
- :
- 8-SOIC
LM2903M/NOPB FAQ
1.How can I place an order for LM2903M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903M/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 LM2903M/NOPB reliable?
The price and inventory of LM2903M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903M/NOPB is usually 5 days.
3.What payment methods are accepted for LM2903M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903M/NOPB?
LM2903M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903M/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 LM2903M/NOPB?
For technical support, including LM2903M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903M/NOPB requirements.
6.How does Aetrix verify that LM2903M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2903M/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 LM2903M/NOPB meets industry standards.
7.What is the process for return or replacement of LM2903M/NOPB?
All LM2903M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2903M/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 LM2903M/NOPB part is unused and in its original packaging.
Return procedure for LM2903M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903M/NOPB Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM2901PWR
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LM239DR
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