LM397MF

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LM397MF

+Nomenclature

IC COMPARATOR VOLT SGL SOT23-5

  • FabricantTexas Instruments

  • Pièce fabricant #LM397MF

  • Package SOT-23-5

  • En stock1706

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Spécifications

Attribut Valeur
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type General Purpose
NumberofElements 1
OutputType CMOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±) 5V ~ 30V, ±2.5V ~ 15V
Voltage-InputOffset(Max) 7mV @ 30V
Current-InputBias(Max) 0.25µA @ 5V
Current-Output(Typ) 13mA @ 5V
Current-Quiescent(Max) 2mA
PropagationDelay(Max) 940µs
OperatingTemperature -40°C ~ 85°C
Package/Case SC-74A, SOT-753
MountingType Surface Mount

Présentation

Description

The LM397MF is a single-channel voltage comparator manufactured by Texas Instruments. It is designed to compare two voltages and provide a digital output indicating which voltage is higher. The device is known for its low power consumption and wide supply voltage range, typically operating from 2.7V to 36V. This makes it versatile for a variety of applications, from battery-powered devices to industrial systems.
The LM397MF features an open-drain output, allowing it to interface with different logic levels. It is housed in a compact SOT-23-5 package, which is ideal for space-constrained applications. The device also offers fast response times, typically in the microsecond range, and a low input bias current, enhancing its precision in low-current applications.
Overall, the LM397MF is valued for its reliability and efficiency in comparing analog signals and generating digital outputs, suitable for applications like zero-crossing detectors, level shifters, and simple analog-to-digital converters.

Equivalent

The LM397MF is a single-channel comparator. Equivalent products include the LM393 (dual comparator), LM311 (single comparator with different pin configuration), and TL331. These alternatives may have different pinouts or additional features, so it's important to review their datasheets to ensure compatibility with your specific application. Always confirm electrical characteristics, package type, and pin configuration before selecting a replacement.

Features

The LM397MF is a single-channel, low-power voltage comparator. It features an open-drain output, allowing it to be used in a variety of voltage level detection applications. Key features include:
1. Low Power Consumption: Ideal for battery-operated applications due to its minimal power needs.
2. Wide Supply Voltage Range: Operates from 2 V to 36 V, providing flexibility for different power supply configurations.
3. Low Input Offset Voltage: Ensures precision in voltage comparison.
4. Open-Drain Output: Enables easy interfacing with different logic levels and allows for wired-OR configurations.
5. Fast Response Time: Quick switching for real-time applications, with a typical response time in the microsecond range.
6. Small Package: Available in a space-saving MicroFET package, making it suitable for compact circuit designs.
7. Temperature Range: Operates effectively across a wide temperature range, typically -40°C to +125°C, making it reliable under various environmental conditions.
These features make the LM397MF suitable for applications in voltage monitoring, battery management, and other precision comparator needs.

Pinout

The LM397MF is a single voltage comparator integrated circuit. It is typically housed in a SOT-23-5 package, which means it has 5 pins. Here is a brief description of its pin functions:
1. V+ (Pin 1): This is the positive power supply pin. The LM397 can operate with a supply voltage ranging typically from 2V to 36V.
2. IN- (Pin 2): This pin is the inverting input of the comparator, where the input voltage is applied that you want to compare.
3. IN+ (Pin 3): This is the non-inverting input of the comparator. The voltage applied here is compared against the voltage on the inverting input.
4. OUT (Pin 4): This is the output pin. The output will be in a high or low state based on the comparison between the input voltages.
5. GND (Pin 5): This is the ground pin, connected to the negative supply voltage.
The LM397 operates by comparing the voltages at the IN+ and IN- pins and switching the output accordingly. It is commonly used in applications like zero-crossing detectors, voltage monitoring, and signal conditioning.

Manufacturer

The LM397MF is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. Headquartered in Dallas, Texas, TI is known for its innovation in the fields of analog technology, digital signal processing, and microcontrollers. The company serves diverse markets, including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI aims to deliver energy-efficient, reliable solutions used in various applications from consumer electronics to complex industrial systems.

Application

The LM397MF is a single-voltage comparator commonly used in various electronic applications. Its primary application areas include:
1. Voltage Detection: Used to monitor supply voltages and generate a warning or shutdown signal if thresholds are crossed.
2. Analog-to-Digital Conversion: Helps in converting analog signals to digital by comparing input voltages against reference levels.
3. Oscillator Circuits: Functions in generating waveforms by comparing input signal levels.
4. Signal Conditioning: Used in filtering and shaping signals for further processing.
5. Level Shifting: Assists in interfacing circuits operating at different voltage levels.
Its compact form and low power consumption make it ideal for portable devices and space-constrained applications.

Package

The LM397MF is typically available in the SOT-23-5 package, which is a small surface-mount package ideal for compact electronic designs.