MAX706APEPA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX706APEPA+ is a microprocessor supervisory circuit that monitors the power supply voltage of a microcontroller or other digital systems. It ensures proper operation by generating a reset signal when the voltage falls below a specified threshold.

Characteristics: - Low power consumption - Wide operating voltage range - Adjustable reset threshold - Precision voltage reference - Power-on reset delay - Watchdog timer

Package: The MAX706APEPA+ is available in an 8-pin DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.

Essence: The MAX706APEPA+ is designed to provide reliable power supply monitoring and reset generation for microcontrollers and digital systems.

Packaging/Quantity: The MAX706APEPA+ is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Range: 2.5V to 4.63V
• Operating Temperature Range: -40°C to +85°C
• Reset Timeout Period: 140ms (typical)
• Watchdog Timer Timeout Period: 1.6s (typical)

Pin Configuration

The MAX706APEPA+ has the following pin configuration:

```

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| | --| RESET |-- --| GND |-- --| MR |-- --| VCC |-- --| RESET OUT |-- --| WDI |-- --| CAP |-- |___________| ```

• RESET: Active-low reset output
• GND: Ground connection
• MR: Manual reset input
• VCC: Power supply voltage input
• RESET OUT: Open-drain reset output
• WDI: Watchdog timer input
• CAP: Capacitor connection for power-on reset delay

Functional Features

1. Power Supply Monitoring: The MAX706APEPA+ continuously monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
2. Adjustable Reset Threshold: The reset threshold voltage can be adjusted using an external resistor divider network, allowing flexibility in setting the desired voltage level.
3. Power-On Reset Delay: The capacitor connected to the CAP pin provides a power-on reset delay, ensuring stable operation during power-up.
4. Watchdog Timer: The WDI pin allows the watchdog timer to be enabled, providing additional system reliability by resetting the microcontroller if it fails to toggle the WDI input within the specified timeout period.

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered applications. - Wide operating voltage range allows compatibility with various microcontrollers and digital systems. - Adjustable reset threshold provides flexibility in voltage monitoring. - Power-on reset delay ensures stable operation during power-up. - Watchdog timer enhances system reliability.

Disadvantages: - Limited number of pins may restrict the functionality in complex systems. - Requires external components (resistor, capacitor) for proper operation.

Working Principles

The MAX706APEPA+ operates by comparing the supply voltage with the internally set threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, forcing the microcontroller or digital system into a known state. The power-on reset delay is achieved by charging the external capacitor connected to the CAP pin. The watchdog timer monitors the WDI input and resets the microcontroller if it fails to toggle within the specified timeout period.

Application Field Plans

The MAX706APEPA+ finds applications in various fields, including: 1. Microcontroller-based systems 2. Embedded systems 3. Industrial automation 4. Automotive electronics 5. Consumer electronics

Alternative Models

1. MAX705APEPA+: Similar to MAX706APEPA+ but with a fixed reset threshold voltage.
2. MAX707APEPA+: Enhanced version with additional features like adjustable watchdog timeout period and active-low push-pull reset output.

These alternative models provide similar functionality with slight variations to cater to different application requirements.

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