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Texas Instruments LMV331M5/MESN
- Part No.:
- LMV331M5/MESN
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
LMV331M5/MESN.pdf
- Description:
- SINGLE COMPARATOR
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Product details
Overview
LMV331M5/MESN from Texas Instruments (formerly National Semiconductor) is a single, low-voltage, open-collector comparator optimized for portable electronics. It operates from 2.7 V to 5.0 V, draws only 60 µA typical supply current per channel, features rail-to-rail input common-mode range including ground, delivers 200 mV output saturation voltage at 4 mA sink, and achieves 200 ns propagation delay at 5 V with 100 mV overdrive - enabling battery-powered voltage monitoring and threshold detection in space-constrained designs.
For engineers reviewing the LMV331M5/MESN datasheet, LMV331M5/MESN pinout, LMV331M5/MESN application, or LMV331M5/MESN equivalent, key selection criteria include its SC70-5/SOT-23-5 package footprint, guaranteed 2.7 V/5 V operation across −40°C to +85°C, bipolar input stage for noise immunity, open-collector output requiring external pull-up, and compatibility with CMOS/TTL logic interfaces.
Technical Context
The LMV331M5/MESN uses a bipolar input stage and open-collector NPN output stage fabricated in National's Submicron Silicon-Gate BiCMOS process. Its input common-mode range extends from −0.1 V to 4.2 V at 5 V supply, supporting ground-referenced sensing, while the output can sink up to 10 mA at VO ≤ 1.5 V.
It exhibits 1.7–9 mV input offset voltage (typ. 7 mV), 5 µV/°C offset drift, and 25–400 nA input bias current. Propagation delay varies with overdrive: 200 ns (typ.) at 100 mV overdrive, 600 ns (typ.) at 10 mV overdrive under 5 V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.0 V - supports single-cell Li-ion and dual-cell alkaline battery systems without regulation. |
| Supply Current (Typ.) | 60 µA - enables multi-year operation in always-on battery monitors and wake-up circuits. |
| Input Common-Mode Range | −0.1 V to 4.2 V at 5 V supply - allows direct sensing of signals referenced to ground or near-rail voltages. |
| Output Saturation Voltage | 200 mV at ISINK = 4 mA - ensures reliable logic-low assertion into 3.3 V or 5 V CMOS/TTL loads. |
| Propagation Delay | 200 ns (typ.) at 100 mV overdrive - suitable for medium-speed window comparators and oscillator feedback paths. |
| Input Offset Voltage | 1.7–9 mV - defines minimum detectable differential voltage in precision threshold applications. |
| ESD Rating (HBM) | 800 V - meets basic handling requirements for consumer assembly environments. |
Pinout & Package
LMV331M5/MESN is packaged in a 5-pin SOT-23 (NS package code MF05A), measuring 2.9 mm × 1.6 mm × 1.1 mm, with thermal resistance θJA = 265°C/W. The SC70 variant (LMV331M7) is smaller but electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Must be pulled up externally (1 kΩ–10 kΩ) to VCC or another logic rail; sinks current when active low. |
| 2 (−IN) | Inverting input | Differential input node; accepts analog signals within specified common-mode range. |
| 3 (GND) | Ground reference | Primary return path for supply and signal currents; connects to system ground plane. |
| 4 (+IN) | Non-inverting input | Differential input node; used for threshold comparison against −IN or reference voltage. |
| 5 (V+) | Positive supply | Single-supply rail connection; supports 2.7–5.0 V operation with no negative supply required. |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar input stage | Provides lower input noise and better EMI rejection than CMOS-input comparators in noisy portable environments. |
| Rail-to-rail input range including ground | Enables direct interface with sensors and ADCs operating at 0 V common-mode, eliminating level-shifting circuitry. |
| Low 60 µA supply current | Reduces quiescent power in battery-backed supervisory circuits and low-duty-cycle wake-up detectors. |
| 200 ns propagation delay at full overdrive | Supports stable square-wave oscillation up to ~2 MHz and fast response in overvoltage/undervoltage lockout. |
| Open-collector output with 10 mA sink capability | Allows wired-OR configuration, level translation across voltage domains, and direct drive of LEDs or small MOSFET gates. |
Applications
| Battery Voltage Monitor | Portable Device Power Sequencing |
|---|---|
Use Scenario: Detecting low-battery condition in Bluetooth headsets or wireless mice before shutdown. IC Role / Device Role / Timing Role: Single comparator comparing battery voltage against a precision reference to assert a reset or alert signal. Use Value: 60 µA quiescent current extends operational life; rail-to-rail input enables accurate measurement down to 2.7 V cutoff. | Use Scenario: Enabling subsystem power rails only after main supply reaches regulation in smartwatches. IC Role / Device Role / Timing Role: Threshold detector generating enable pulses for LDOs or load switches during cold-start sequences. Use Value: Guaranteed 2.7 V operation ensures reliable startup even with partially discharged batteries. |
| CMOS/TTL Logic Interface | Square-Wave Oscillator |
Use Scenario: Converting analog sensor outputs (e.g., thermistor voltage divider) into clean digital signals for microcontroller GPIOs. IC Role / Device Role / Timing Role: Analog-to-digital translator with hysteresis to prevent chatter on slow-moving inputs. Use Value: Open-collector output simplifies interfacing to 1.8 V, 3.3 V, or 5 V logic families using appropriate pull-up voltage. | Use Scenario: Generating clock signals for real-time clocks or LED blink timing in wearables. IC Role / Device Role / Timing Role: Core timing element in RC-based relaxation oscillator topology with hysteresis. Use Value: 200 ns propagation delay enables stable oscillation up to ~500 kHz; low supply current minimizes timing circuit power overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV331DBVR | CMOS input (vs. bipolar), 55 µA supply current, 1.5 V to 5.5 V supply, 150 mV saturation voltage at 1 mA. | Better for ultra-low-power, high-impedance sensor interfaces; less robust in EMI-prone environments. | Choose TLV331DBVR when input bias current <1 pA is critical and supply may drop below 2.7 V. |
| LM393DR | Wider supply range (2–36 V), higher 1 mA supply current, slower 1.3 µs propagation delay, SOIC-8 package only. | Suitable for industrial 12/24 V systems but incompatible with sub-3 V battery operation. | Choose LM393DR only for legacy 5 V–30 V designs where footprint and power are secondary concerns. |
Compared with TLV331DBVR and LM393DR, LMV331M5/MESN uniquely balances low-voltage operation (2.7 V min), bipolar noise immunity, SOT-23-5 footprint, and sub-100 µA consumption - making it optimal for modern compact battery-powered systems where both size and supply headroom are constrained.
Availability
LMV331M5/MESN is available at Aetrix Electronics and suitable for battery voltage monitoring, portable device power sequencing, CMOS/TTL logic interfacing, square-wave oscillator generation, and low-voltage threshold detection requiring stable component supply across production volumes.
Supply support for LMV331M5/MESN 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 acquired National Semiconductor in 2011 and maintains its precision analog portfolio, including comparators, op-amps, and data converters, with global manufacturing and quality infrastructure.
The LMV331M5/MESN belongs to TI's general-purpose low-voltage comparator family, designed specifically for space- and power-constrained portable electronics such as mobile handsets, wearables, and IoT edge nodes.
FAQ
What is the correct pinout for LMV331M5/MESN in SOT-23-5 package?
The LMV331M5/MESN uses standard SOT-23-5 pinout: Pin 1 = OUT (open-collector), Pin 2 = −IN, Pin 3 = GND, Pin 4 = +IN, Pin 5 = V+. This matches NS package code MF05A and is verified in National Semiconductor's official connection diagram (Figure 10008001). No alternate pinouts exist for this marking variant.
Does LMV331M5/MESN support rail-to-rail input operation?
Yes, LMV331M5/MESN supports input common-mode voltage from −0.1 V to 4.2 V at 5 V supply, explicitly including ground (0 V) and extending within 0.8 V of V+. This enables direct interface with ground-referenced sensors and resistive dividers without level-shifting circuitry - confirmed in the 5 V DC Electrical Characteristics table.
What is the maximum output sink current specification for LMV331M5/MESN?
The LMV331M5/MESN is specified to sink up to 10 mA while maintaining VO ≤ 1.5 V at 5 V supply, per the "IO Output Sink Current" parameter in the 5 V DC Electrical Characteristics table. At 2.7 V supply, it sinks 5 mA under the same condition - sufficient to drive LEDs, small MOSFET gates, or TTL inputs directly.
Can LMV331M5/MESN operate from a 2.5 V supply?
No - LMV331M5/MESN is not characterized or guaranteed for operation below 2.7 V. Absolute minimum supply is 2.7 V, and all electrical specifications (including propagation delay, offset voltage, and supply current) are validated only from 2.7 V to 5.0 V per the Operating Ratings table. Use TLV331 or TSV911 for true 1.8 V operation.
Is LMV331M5/MESN pin-compatible with LMV331M7?
Yes - LMV331M5/MESN (SOT-23-5, NS code MF05A) and LMV331M7 (SC70-5, NS code MAA05A) share identical pinout, electrical specifications, and functional behavior. They differ only in package dimensions and thermal performance (θJA = 265°C/W vs. 478°C/W); both are drop-in replacements in layout where board space permits.
LMV331M5/MESN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
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- Voltage - Supply, Single/Dual (±):
- -
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- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
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- Current - Quiescent (Max):
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- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
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- Hysteresis:
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- Operating Temperature:
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- Qualification:
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LMV331M5/MESN FAQ
1.How can I place an order for LMV331M5/MESN through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331M5/MESN 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 LMV331M5/MESN reliable?
The price and inventory of LMV331M5/MESN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331M5/MESN is usually 5 days.
3.What payment methods are accepted for LMV331M5/MESN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331M5/MESN transactions.
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4.How is shipping managed for LMV331M5/MESN?
LMV331M5/MESN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331M5/MESN 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 LMV331M5/MESN?
For technical support, including LMV331M5/MESN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331M5/MESN requirements.
6.How does Aetrix verify that LMV331M5/MESN is sourced from the original manufacturer or authorized distributors?
All LMV331M5/MESN 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 LMV331M5/MESN meets industry standards.
7.What is the process for return or replacement of LMV331M5/MESN?
All LMV331M5/MESN units undergo pre-shipment inspection (PSI). If there is an issue with LMV331M5/MESN, 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 LMV331M5/MESN part is unused and in its original packaging.
Return procedure for LMV331M5/MESN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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