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

Texas Instruments LMV7239M5

Name: LMV7239M5
Brand: Texas Instruments
SKU: LMV7239M5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV7239M5

Manufacturer:: Texas Instruments

Category:: Comparators

Package:: SC-74A, SOT-753

Datasheet:: LMV7239M5.pdf

Description:: IC COMPARATOR 1 GEN PUR SOT23-5

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Product details

Overview

LMV7239M5 from Texas Instruments is a rail-to-rail input, push-pull output voltage comparator optimized for ultra-low-power, high-speed operation in single-supply systems. It delivers 75 ns propagation delay at 5 V with only 65 µA supply current, supports 2.7 V to 5.5 V supply range, and features ±0.2 V beyond-rail input common-mode range - enabling ground- and supply-sensing in battery-powered instrumentation and portable interfaces.

For engineers reviewing the LMV7239M5 datasheet, LMV7239M5 pinout, LMV7239M5 application, or LMV7239M5 equivalent, key selection criteria include its push-pull output eliminating external pull-up resistors, guaranteed 75-ns timing at 100-mV overdrive, rail-to-rail input stage with −0.2 V to +5.2 V common-mode range at 5 V, and SOT-23-5 packaging for space-constrained PCB layouts.

Technical Context

The LMV7239M5 uses complementary PNP/NPN input transistors to achieve > rail-to-rail input common-mode range (−0.2 V to V_CC + 0.1 V), allowing direct sensing of signals below ground or above supply. Its push-pull output stage provides active sourcing and sinking - delivering 25 mA short-circuit current (sourcing) and 30 mA (sinking) at 5 V without external components.

Propagation delay remains stable across temperature (±5 ns from −40°C to 85°C at 20-mV overdrive) and load capacitance (≤100 ns up to 100 pF), with <2 ns skew between rising/falling edges - critical for precise zero-crossing detection and high-speed sampling circuits requiring deterministic timing.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay	75 ns at 5 V, 100 mV overdrive, 15 pF load - enables sub-13 MHz sampling rate in comparator-based ADC front-ends.
Supply Current	65 µA typical at 5 V - supports multi-year battery life in always-on sensor monitors and IoT wake-up circuits.
Input Common-Mode Range	−0.2 V to 5.2 V at 5 V supply - permits direct interface to grounded sensors and V_CC-referenced references without level-shifting.
Output Type	Push-pull - eliminates need for external pull-up resistor, reduces BOM count, and ensures fast rise/fall times (1.2 ns/1.2 ns).
Input Offset Voltage	±1 mV typical at 25°C - maintains <10 mV trip-point error in precision window comparators and threshold detectors.
Supply Voltage Range	2.7 V to 5.5 V - compatible with Li-ion, Li-Po, and regulated 3.3 V/5 V rails without external regulators.
CMRR	67 dB at 5 V - suppresses supply noise coupling into input stage during dynamic load switching.

Pinout & Package

SOT-23-5 package (2.90 mm × 1.60 mm), surface-mount, lead-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 - V_OUT	Output	Active push-pull node: drives high to V₊ − 0.15 V (4 mA load) and low to 350 mV (−4 mA load) - no external pull-up required.
2 - V₋	Negative Supply	Ground reference terminal; supports single-supply operation with 0 V connection.
3 - IN₊	Non-inverting Input	Differential input node with rail-to-rail capability; accepts signals from −0.2 V to V₊ + 0.1 V.
4 - IN₋	Inverting Input	Differential input node with identical rail-to-rail range; used for threshold comparison or feedback paths.
5 - V₊	Positive Supply	Primary power input; operates from 2.7 V to 5.5 V - tolerant of brown-out conditions down to 2.7 V.

Key Features

Feature	Design Value
Rail-to-rail input stage	Extends 200 mV below ground and 200 mV above V₊, enabling direct measurement of signals referenced to system ground or supply rail.
Push-pull output	Delivers full logic swing without external components - reduces layout area and eliminates pull-up resistor tolerance drift.
Ultra-low quiescent current	65 µA at 5 V allows integration into always-on subsystems (e.g., battery-backed real-time clocks or tamper-detection circuits) with negligible standby drain.
75-ns propagation delay	Guaranteed timing performance at 100-mV overdrive supports high-resolution analog-to-digital conversion and fast fault detection loops.
High CMRR & PSRR	67 dB CMRR and 85 dB PSRR minimize sensitivity to supply ripple and common-mode noise in noisy industrial environments.

Applications

Portable Power Monitoring	High-Speed Line Receiver
Use Scenario: Monitoring Li-ion battery voltage during charge/discharge cycles in handheld medical devices. IC Role / Device Role / Timing Role: Comparator configured as window detector to trigger low-battery alert and overvoltage shutdown within 75 ns. Use Value: Rail-to-rail input captures full 0–4.2 V battery range; 65 µA supply current extends device runtime between charges.	Use Scenario: Converting differential USB or RS-422 signals to single-ended logic levels in embedded gateways. IC Role / Device Role / Timing Role: High-speed differential line receiver using LMV7239M5 in comparator mode with hysteresis. Use Value: 75 ns delay ensures accurate data recovery at >10 Mbps; push-pull output directly drives FPGA I/O banks without level translators.
Zero-Crossing Detector	Threshold-Based Wake-Up Circuit
Use Scenario: Detecting AC mains zero crossings for phase-controlled dimmers in smart lighting controllers. IC Role / Device Role / Timing Role: Precision zero-crossing detector with hysteresis to reject noise-induced false triggers. Use Value: −0.2 V to 5.2 V input range accommodates AC-coupled inputs; <2 ns skew ensures symmetrical timing for TRIAC firing control.	Use Scenario: Waking microcontrollers from deep sleep when ambient light exceeds preset lux threshold. IC Role / Device Role / Timing Role: Low-power threshold detector comparing photodiode amplifier output to stable reference. Use Value: 65 µA quiescent current enables continuous monitoring; ±1 mV offset ensures consistent wake-up point across temperature.

Portable Power Monitoring

High-Speed Line Receiver

Use Scenario: Monitoring Li-ion battery voltage during charge/discharge cycles in handheld medical devices.

IC Role / Device Role / Timing Role: Comparator configured as window detector to trigger low-battery alert and overvoltage shutdown within 75 ns.

Use Value: Rail-to-rail input captures full 0–4.2 V battery range; 65 µA supply current extends device runtime between charges.

Use Scenario: Converting differential USB or RS-422 signals to single-ended logic levels in embedded gateways.

IC Role / Device Role / Timing Role: High-speed differential line receiver using LMV7239M5 in comparator mode with hysteresis.

Use Value: 75 ns delay ensures accurate data recovery at >10 Mbps; push-pull output directly drives FPGA I/O banks without level translators.

Zero-Crossing Detector

Threshold-Based Wake-Up Circuit

Use Scenario: Detecting AC mains zero crossings for phase-controlled dimmers in smart lighting controllers.

IC Role / Device Role / Timing Role: Precision zero-crossing detector with hysteresis to reject noise-induced false triggers.

Use Value: −0.2 V to 5.2 V input range accommodates AC-coupled inputs; <2 ns skew ensures symmetrical timing for TRIAC firing control.

Use Scenario: Waking microcontrollers from deep sleep when ambient light exceeds preset lux threshold.

IC Role / Device Role / Timing Role: Low-power threshold detector comparing photodiode amplifier output to stable reference.

Use Value: 65 µA quiescent current enables continuous monitoring; ±1 mV offset ensures consistent wake-up point across temperature.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV7235M5	Open-drain output; requires external pull-up resistor; 100 ns propagation delay at 20 mV overdrive (5 V)	Used where wired-OR bus topology or level shifting is needed; unsuitable for direct FPGA/LVCMOS drive without pull-up	Select LMV7235M5 only if open-drain functionality is explicitly required; LMV7239M5 is superior for push-pull logic interfacing.
TLV3501DBVR	4.5 ns propagation delay, 2.9 mA supply current, 2.7–5.5 V supply - significantly faster but 45× higher power	Targeted at high-speed test equipment and RF sampling; not viable for battery-operated systems	Choose TLV3501DBVR only when sub-5 ns timing is mandatory; LMV7239M5 offers optimal balance of speed and ultra-low power.

Compared with LMV7235M5, LMV7239M5 eliminates external components and improves timing consistency; versus TLV3501DBVR, it reduces supply current by 45× while retaining sufficient speed for most portable and industrial sensing applications - making it the preferred choice for power-sensitive, medium-speed comparator use cases.

Availability

LMV7239M5 is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, smart energy meters, and battery management systems requiring stable component supply with long-term manufacturability.

Supply support for LMV7239M5 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 chain and low-power design.

The LMV7239M5 belongs to TI's ultra-low-power, high-speed comparator product line - engineered specifically for battery-constrained, space-limited applications demanding rail-to-rail input operation and deterministic nanosecond-scale response.

FAQ

What is the maximum operating temperature for the LMV7239M5?

The LMV7239M5 is specified for operation from −40°C to +85°C ambient temperature. Its electrical characteristics - including propagation delay, input offset voltage, and supply current - are guaranteed across this full industrial temperature range per the datasheet's Recommended Operating Conditions table. Thermal derating is not required within these limits, and the device's junction temperature remains within safe bounds (≤150°C) under normal PCB thermal conditions.

Does the LMV7239M5 require an external pull-up resistor on its output?

No, the LMV7239M5 does not require an external pull-up resistor because it features a push-pull output stage. Unlike the open-drain LMV7235M5, the LMV7239M5 actively drives both high and low states: sourcing up to 25 mA and sinking up to 30 mA at 5 V. This eliminates BOM cost and layout complexity associated with pull-up resistors while ensuring fast, rail-aligned logic transitions.

Can the LMV7239M5 operate from a 2.7-V supply?

Yes, the LMV7239M5 is fully specified to operate from 2.7 V to 5.5 V. At 2.7 V, it maintains 75-ns propagation delay (at 100-mV overdrive), 65 µA supply current (typical), and rail-to-rail input operation from −0.2 V to 2.9 V. This makes the LMV7239M5 ideal for single-cell Li-ion or alkaline-powered systems where supply voltage varies widely during discharge.

What is the input common-mode voltage range of the LMV7239M5 at 5 V supply?

At 5 V supply, the LMV7239M5 has an input common-mode voltage range of −0.2 V to 5.2 V - extending 200 mV beyond both rails. This is confirmed in Section 6.5 and 6.6 of the datasheet under "V_CM Input Common-Mode Voltage Range" and enables direct interface to grounded sensors, shunt resistors, and supply-referenced references without attenuation or level-shifting circuitry.

Is the LMV7239M5 pin-compatible with the LMV7235M5?

Yes, the LMV7239M5 and LMV7235M5 share identical SOT-23-5 pinout (V_OUT, V₋, IN₊, IN₋, V₊) and package dimensions, enabling drop-in replacement in existing layouts. However, functional behavior differs: LMV7239M5 provides push-pull output, while LMV7235M5 requires external pull-up. No PCB changes are needed, but schematic updates may be required to remove the pull-up resistor when substituting LMV7239M5.

LMV7239M5 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

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

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: General Purpose

Number of Elements:: 1

Output Type:: Push-Pull

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

:: 6mV @ 5V

Voltage - Input Offset (Max):: 0.4µA @ 5V

Current - Input Bias (Max):: -

Current - Output (Typ):: 95µA

Current - Quiescent (Max):: 67dB CMRR, 85dB PSRR

CMRR, PSRR (Typ):: 62ns

Propagation Delay (Max):: -

Hysteresis:: -40°C ~ 85°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: SOT-23-5

LMV7239M5 FAQ

1.How can I place an order for LMV7239M5 through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV7239M5 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 LMV7239M5 reliable?

The price and inventory of LMV7239M5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7239M5 is usually 5 days.

3.What payment methods are accepted for LMV7239M5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7239M5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV7239M5?

LMV7239M5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV7239M5 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 LMV7239M5?

For technical support, including LMV7239M5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7239M5 requirements.

6.How does Aetrix verify that LMV7239M5 is sourced from the original manufacturer or authorized distributors?

All LMV7239M5 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 LMV7239M5 meets industry standards.

7.What is the process for return or replacement of LMV7239M5?

All LMV7239M5 units undergo pre-shipment inspection (PSI). If there is an issue with LMV7239M5, 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 LMV7239M5 part is unused and in its original packaging.

Return procedure for LMV7239M5:

1.Submit a request within 90 days.

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

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