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Home > Products > Integrated Circuits (ICs) > Linear > Comparators

Texas Instruments LMV331IDBVR

Name: LMV331IDBVR
Brand: Texas Instruments
SKU: LMV331IDBVR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV331IDBVR

Manufacturer:: Texas Instruments

Category:: Comparators

Package:: SC-74A, SOT-753

Datasheet:: LMV331IDBVR.pdf

Description:: IC COMPARATOR 1 GEN PUR SOT23-5

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Product details

Overview

LMV331IDBVR from Texas Instruments is a single-channel, low-voltage, open-collector comparator optimized for portable and space-constrained systems. It operates from 2.7V to 5.5V, draws only 26μA typical supply current, features rail-to-rail input common-mode range including ground, and delivers 150mV typical output saturation voltage - enabling direct interfacing with 1.8V/3.3V logic in battery-powered vacuum robots and server PSUs.

For engineers reviewing the LMV331IDBVR datasheet, LMV331IDBVR pinout, LMV331IDBVR application, or LMV331IDBVR equivalent, key selection criteria include its SOT-23-5 package footprint, 7mV max input offset voltage at 25°C, 600ns propagation delay (high-to-low) at 5V, −40°C to +125°C operating temperature, and compatibility with pull-up voltages up to 5.5V on the open-drain output.

Technical Context

The LMV331IDBVR implements a PNP-input stage enabling input common-mode operation down to ground and up to V_CC−0.7V, making it suitable for single-supply sensing across modern low-voltage rails. Its open-drain NPN output stage provides flexible logic-level translation and wired-AND capability without internal pull-up.

It functions strictly as a voltage comparator - not an amplifier - with no internal hysteresis, requiring external feedback if noise immunity is needed. Propagation delay varies with input overdrive (200–600ns at 5V), and output sink current is rated up to 10mA at 5V with VOL scaling linearly per load current.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7V to 5.5V - supports direct operation from Li-ion, USB, and 3.3V/5V system rails without regulation.
Supply Current (I_CC)	26μA typical at 25°C - enables multi-year battery life in always-on monitoring circuits.
Input Offset Voltage (V_IO)	7mV max at 25°C - ensures reliable detection of ≥10mV signal thresholds in precision level-shift applications.
Propagation Delay (t_PHL)	600ns typical at V_CC = 5V, 10mV overdrive - meets timing requirements for mid-speed power sequencing and fault flag assertion.
Output Sink Current	10mA min at V_OL ≤ 400mV (5V supply) - drives standard 5.1kΩ pull-ups to 3.3V or 1.8V logic with margin.
Common-Mode Input Range	−0.1V to V_CC−0.7V - accepts ground-referenced sensor outputs and rail-sensing inputs without level-shifting.
ESD Rating (HBM)	±2000V - withstands handling in standard assembly environments without additional protection circuitry.

Pinout & Package

SOT-23-5 (DBV) package: 1.60mm × 2.90mm body, 0.95mm max height, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN+)	Non-inverting input	Accepts reference or signal voltage; biased by internal PNP stage allowing ground-level operation.
2 (IN−)	Inverting input	Accepts sensed signal; differential comparison against IN+ determines output state.
3 (OUT)	Open-drain output	Sinks current when IN− > IN+ + V_IO; requires external pull-up for logic-high assertion.
4 (GND)	Ground reference	Return path for supply and input signals; must be low-impedance to maintain VICR integrity.
5 (V_CC+)	Positive supply	Power rail input; bypass capacitor (0.1μF) required adjacent to pin for noise rejection.

Key Features

Feature	Design Value
Ultra-low quiescent current	26μA typical enables continuous monitoring in energy-harvesting and coin-cell applications.
Rail-to-rail input common-mode range	Includes ground and extends to V_CC−0.7V - eliminates need for input biasing resistors in single-supply designs.
Open-drain output architecture	Supports mixed-voltage interfacing (e.g., 5V comparator driving 1.8V MCU GPIO) and wired-AND bus configurations.
Wide temperature operation	Specified from −40°C to +125°C - suitable for under-hood automotive modules and industrial motor controllers.
Fast response with low overdrive	200ns propagation delay at 100mV overdrive (5V) - enables accurate edge detection in digital power control loops.

Applications

Vacuum Robot Obstacle Detection	Server PSU OVP/UVP Monitoring
Use Scenario: Detects infrared proximity sensor output crossing a threshold to trigger collision avoidance braking. IC Role / Device Role / Timing Role: Voltage comparator comparing analog IR sensor output to fixed reference; asserts fault flag within 600ns. Use Value: Enables sub-10ms reaction time using 26μA supply current - extending battery runtime without compromising safety response.	Use Scenario: Monitors DC output rails (12V, 5V, 3.3V) for overvoltage and undervoltage conditions in redundant power supplies. IC Role / Device Role / Timing Role: Single-supply comparator with ground-referenced inputs senses rail deviation and pulls down supervisor enable line. Use Value: Operates reliably across −40°C to +125°C ambient and interfaces directly to 3.3V PMBus controllers via open-drain output.
Cordless Power Tool Battery Protection	Smart Appliance Motor Control
Use Scenario: Compares cell voltage against protection thresholds during charging/discharging to disable FET drivers via MCU interrupt. IC Role / Device Role / Timing Role: Low-power comparator feeding GPIO interrupt on lithium battery pack management IC. Use Value: 26μA I_CC minimizes self-discharge during storage; 7mV V_IO ensures ±20mV accuracy in 4.2V cell voltage monitoring.	Use Scenario: Detects zero-crossing of AC motor back-EMF for commutation timing in BLDC fan drivers. IC Role / Device Role / Timing Role: High-speed comparator converting sinusoidal back-EMF into clean digital edges for microcontroller timer capture. Use Value: 200ns t_PHL at 100mV overdrive ensures precise 50/60Hz zero-crossing detection with <1° phase error.

Vacuum Robot Obstacle Detection

Server PSU OVP/UVP Monitoring

Use Scenario: Detects infrared proximity sensor output crossing a threshold to trigger collision avoidance braking.

IC Role / Device Role / Timing Role: Voltage comparator comparing analog IR sensor output to fixed reference; asserts fault flag within 600ns.

Use Value: Enables sub-10ms reaction time using 26μA supply current - extending battery runtime without compromising safety response.

Use Scenario: Monitors DC output rails (12V, 5V, 3.3V) for overvoltage and undervoltage conditions in redundant power supplies.

IC Role / Device Role / Timing Role: Single-supply comparator with ground-referenced inputs senses rail deviation and pulls down supervisor enable line.

Use Value: Operates reliably across −40°C to +125°C ambient and interfaces directly to 3.3V PMBus controllers via open-drain output.

Cordless Power Tool Battery Protection

Smart Appliance Motor Control

Use Scenario: Compares cell voltage against protection thresholds during charging/discharging to disable FET drivers via MCU interrupt.

IC Role / Device Role / Timing Role: Low-power comparator feeding GPIO interrupt on lithium battery pack management IC.

Use Value: 26μA I_CC minimizes self-discharge during storage; 7mV V_IO ensures ±20mV accuracy in 4.2V cell voltage monitoring.

Use Scenario: Detects zero-crossing of AC motor back-EMF for commutation timing in BLDC fan drivers.

IC Role / Device Role / Timing Role: High-speed comparator converting sinusoidal back-EMF into clean digital edges for microcontroller timer capture.

Use Value: 200ns t_PHL at 100mV overdrive ensures precise 50/60Hz zero-crossing detection with <1° phase error.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage comparator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV331IDBVR	Lower 17μA I_CC, 1.5V–5.5V supply, 5mV V_IO max - improved accuracy and lower power.	Better suited for ultra-low-power IoT sensors where every nanoamp matters; same SOT-23-5 footprint.	Select TLV331IDBVR when V_IO < 5mV or I_CC < 20μA is mandatory; LMV331IDBVR remains optimal for cost-sensitive high-volume industrial use.
LM393DR	Wider 2V–36V supply range, 2mA I_CC, 7mV V_IO, SOIC-8 - higher power, higher voltage tolerance.	Used in legacy 12V/24V industrial controls where wide supply range outweighs quiescent current concerns.	Choose LM393DR only for systems requiring >5.5V operation or existing SOIC-8 layouts; LMV331IDBVR is superior for modern 3.3V/5V embedded designs.

Compared with TLV331IDBVR and LM393DR, LMV331IDBVR delivers the best balance of low power (26μA), ground-sensing capability, and cost for 2.7V–5.5V portable and industrial applications - offering verified performance where ultra-low I_CC or high-voltage operation are not primary constraints.

Availability

LMV331IDBVR is available at Aetrix Electronics and suitable for vacuum robot obstacle detection, server PSU overvoltage monitoring, and cordless power tool battery protection requiring stable component supply across extended production lifecycles.

Supply support for LMV331IDBVR 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 for industrial, automotive, and personal electronics markets.

The LMV331IDBVR belongs to TI's general-purpose low-voltage comparator family, designed specifically for cost-sensitive, space-constrained applications demanding low power, ground-sensing capability, and robust operation across −40°C to +125°C.

FAQ

What is the maximum supply voltage rating for LMV331IDBVR?

The absolute maximum supply voltage for LMV331IDBVR is 5.5V. Operation beyond this value risks permanent damage. The recommended operating range is 2.7V to 5.5V, ensuring full specification compliance including input common-mode range, propagation delay, and output saturation voltage. This makes LMV331IDBVR ideal for 3.3V and 5V systems but unsuitable for 12V or higher rails without regulation.

Does LMV331IDBVR have internal hysteresis?

No, LMV331IDBVR does not include internal hysteresis. It is a basic comparator with no built-in noise immunity. When used in noisy environments - such as motor control feedback or power supply monitoring - external positive feedback (e.g., resistor from OUT to IN+) must be added to introduce controlled hysteresis. The LMV331IDBVR datasheet provides design guidance for calculating hysteresis thresholds based on R_PULLUP and desired voltage margin.

Can LMV331IDBVR interface directly with a 1.8V microcontroller GPIO?

Yes, LMV331IDBVR can interface directly with a 1.8V microcontroller GPIO using its open-drain output. Connect the pull-up resistor to the 1.8V rail (not V_CC). At 1.8V pull-up and 10kΩ resistance, the output sinks <200μA while maintaining VOL < 400mV - well within 1.8V logic-high and logic-low thresholds. This level-shifting capability is a core design feature confirmed in TI's application notes for LMV331IDBVR.

What is the input common-mode voltage range of LMV331IDBVR at −40°C?

At −40°C, the input common-mode voltage range of LMV331IDBVR is specified from 0V to V_CC−0.7V. For example, at V_CC = 2.7V, the usable input range is 0V to 2.0V; at V_CC = 5.5V, it is 0V to 4.8V. This ground-inclusive range remains stable across temperature and enables direct connection of ground-referenced sensors - a key differentiator versus older comparators like LM393.

Is LMV331IDBVR pin-compatible with other comparators in the LMV3xx family?

LMV331IDBVR (SOT-23-5) shares identical pinout with LMV331IDCKR (SC-70-5) for IN+, IN−, OUT, GND, and V_CC - enabling direct PCB footprint substitution between these two packages. However, it is not pin-compatible with dual (LMV393) or quad (LMV339) variants, which use 8-pin and 14-pin packages with different pin assignments. Always verify layout compatibility using TI's official DBV and DCK package drawings before redesign.

LMV331IDBVR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: SC-74A, SOT-753

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: General Purpose

Number of Elements:: 1

Output Type:: Open-Collector

Voltage - Supply, Single/Dual (±):: 2.7V ~ 5.5V

:: 7mV @ 5V

Voltage - Input Offset (Max):: 0.25µA @ 5V

Current - Input Bias (Max):: 84mA @ 5V

Current - Output (Typ):: 150µA

Current - Quiescent (Max):: -

CMRR, PSRR (Typ):: 600ns

Propagation Delay (Max):: -

Hysteresis:: -40°C ~ 85°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: SOT-23-5

LMV331IDBVR FAQ

1.How can I place an order for LMV331IDBVR through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV331IDBVR 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 LMV331IDBVR reliable?

The price and inventory of LMV331IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331IDBVR is usually 5 days.

3.What payment methods are accepted for LMV331IDBVR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331IDBVR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV331IDBVR?

LMV331IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV331IDBVR 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 LMV331IDBVR?

For technical support, including LMV331IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331IDBVR requirements.

6.How does Aetrix verify that LMV331IDBVR is sourced from the original manufacturer or authorized distributors?

All LMV331IDBVR 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 LMV331IDBVR meets industry standards.

7.What is the process for return or replacement of LMV331IDBVR?

All LMV331IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with LMV331IDBVR, 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 LMV331IDBVR part is unused and in its original packaging.

Return procedure for LMV331IDBVR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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