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LM397MF
+Lista de MateriaisIC COMPARATOR VOLT SGL SOT23-5
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FabricanteTexas Instruments
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Peça do Fabricante #LM397MF
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Pacote SOT-23-5
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Em Estoque1706
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Especificações
| Atributo | Valor |
| 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 |
Visão Geral
Description
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
Features
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
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
Application
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.