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MAX809MEXR+T
Product Overview
- Category: Integrated Circuits (ICs)
- Use: Voltage Supervisors
- Characteristics: Low-power, microprocessor reset circuit
- Package: SOT-23-3
- Essence: Monitors the power supply voltage and generates a reset signal when the voltage drops below a specified threshold.
- Packaging/Quantity: Tape & Reel, 3000 pieces per reel
Specifications
- Supply Voltage Range: 1.0V to 5.5V
- Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V
- Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The MAX809MEXR+T has a standard SOT-23-3 package with the following pin configuration:
```
| | --| RESET | --| GND | --| VCC | |___________| ```
Functional Features
- Monitors the power supply voltage continuously.
- Generates a reset signal when the voltage drops below the specified threshold.
- Provides a guaranteed minimum reset timeout period to ensure proper system initialization.
Advantages
- Low-power consumption, suitable for battery-powered applications.
- Small form factor and easy integration into compact designs.
- Wide operating voltage range allows compatibility with various systems.
- Multiple reset threshold and timeout options provide flexibility in different applications.
Disadvantages
- Limited number of reset threshold and timeout options compared to some other models.
- Not suitable for high-voltage applications due to the maximum supply voltage limitation.
Working Principles
The MAX809MEXR+T operates by comparing the supply voltage with a fixed threshold voltage. When the supply voltage drops below the threshold, the internal circuitry generates a reset signal. The reset signal remains active for a specified timeout period after the supply voltage rises above the threshold again. This ensures that the microprocessor or system is properly reset and initialized.
Detailed Application Field Plans
- Battery-powered devices: Maximizing battery life by monitoring voltage and resetting the system when necessary.
- Embedded systems: Ensuring proper initialization of microcontrollers and other integrated circuits.
- Industrial automation: Preventing system malfunctions due to power supply fluctuations.
- Automotive electronics: Enhancing the reliability of automotive control systems.
Detailed Alternative Models
- MAX811: Similar low-power voltage supervisors with additional features like manual reset input.
- MAX803: Voltage supervisors with adjustable reset threshold and timeout options.
- MAX638: Voltage supervisors with watchdog timer functionality for enhanced system monitoring.
Note: This entry provides a brief overview of the MAX809MEXR+T. For complete information, refer to the product datasheet and specifications provided by the manufacturer.
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Liste 10 perguntas e respostas comuns relacionadas à aplicação de MAX809MEXR+T em soluções técnicas
Sure! Here are 10 common questions and answers related to the application of MAX809MEXR+T in technical solutions:
Q: What is the MAX809MEXR+T? A: The MAX809MEXR+T is a microprocessor reset circuit that monitors the power supply voltage of a system and asserts a reset signal when the voltage falls below a predetermined threshold.
Q: What is the operating voltage range of MAX809MEXR+T? A: The operating voltage range of MAX809MEXR+T is typically between 1.0V and 5.5V.
Q: How does MAX809MEXR+T help in system reliability? A: MAX809MEXR+T ensures reliable operation by monitoring the power supply voltage and asserting a reset signal to the microprocessor when the voltage drops below a certain level, preventing erratic behavior or data corruption.
Q: Can I adjust the reset threshold voltage of MAX809MEXR+T? A: No, the reset threshold voltage of MAX809MEXR+T is fixed at a specific value, typically around 2.93V.
Q: Is MAX809MEXR+T suitable for battery-powered applications? A: Yes, MAX809MEXR+T is suitable for battery-powered applications as it operates within a wide voltage range and consumes very low quiescent current.
Q: Does MAX809MEXR+T have any delay before asserting the reset signal? A: Yes, MAX809MEXR+T has a fixed delay time of approximately 140ms after the power supply voltage rises above the reset threshold before it asserts the reset signal.
Q: Can I use MAX809MEXR+T in systems with multiple power supplies? A: Yes, MAX809MEXR+T can be used in systems with multiple power supplies by connecting the reset input pin to the main power supply voltage.
Q: What is the package type of MAX809MEXR+T? A: MAX809MEXR+T is available in a small SOT-23 package, which is suitable for space-constrained applications.
Q: Does MAX809MEXR+T have any additional features? A: Yes, MAX809MEXR+T includes a manual reset input pin that allows an external signal to assert a reset condition.
Q: Can I use MAX809MEXR+T in automotive applications? A: Yes, MAX809MEXR+T is qualified for automotive applications and meets the necessary standards for reliability and performance.
Please note that these answers are general and may vary depending on the specific datasheet and application requirements.