MAX708EUA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX708EUA+ belongs to the category of integrated circuits (ICs).

Use

The MAX708EUA+ IC is primarily used for voltage monitoring and reset functions in microcontroller-based systems.

Characteristics

• Voltage monitoring: The MAX708EUA+ monitors the supply voltage and provides a reset signal when it falls below a specified threshold.
• Reset function: It ensures proper initialization of microcontrollers by generating a reset signal during power-up or voltage drops.
• Low power consumption: The IC operates with low quiescent current, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide voltage range, typically from 1.0V to 5.5V.
• Adjustable reset threshold: The reset threshold voltage can be set using external resistors.

Package and Quantity

The MAX708EUA+ is available in a small SOT23-8 package. It is supplied in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Reset Threshold Voltage Range: Adjustable, typically 2.63V to 4.38V
• Quiescent Current: 7µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX708EUA+ has the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH OUT |-- Pin 3: Threshold Input (TH) --| TR RESET|-- Pin 4: Active-Low Reset Input (RESET) --| | |__________| ```

Functional Features

1. Voltage Monitoring: The MAX708EUA+ continuously monitors the supply voltage.
2. Reset Generation: It generates a reset signal when the supply voltage falls below the set threshold.
3. Adjustable Threshold: The reset threshold voltage can be adjusted using external resistors.
4. Power-On Reset: The IC ensures proper initialization of microcontrollers during power-up.
5. Low Quiescent Current: It operates with low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality.
• Wide operating voltage range allows compatibility with various systems.
• Adjustable reset threshold provides flexibility in different applications.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited to voltage monitoring and reset functions only.
• SOT23-8 package may require careful handling during assembly.

Working Principles

The MAX708EUA+ works by continuously monitoring the supply voltage through the TH pin. When the voltage drops below the set threshold, the IC generates a reset signal on the RST pin. This reset signal is used to initialize microcontrollers or other digital circuits connected to it. The reset threshold voltage can be adjusted using external resistors connected to the TH pin.

Application Field Plans

The MAX708EUA+ finds applications in various fields, including: 1. Embedded Systems: Used for voltage monitoring and reset functions in microcontroller-based systems. 2. Industrial Automation: Ensures reliable initialization of control systems during power-up or voltage drops. 3. Automotive Electronics: Provides reset functionality in automotive electronic control units (ECUs). 4. Consumer Electronics: Used in battery-powered devices to monitor voltage and ensure proper system operation.

Alternative Models

1. MAX706EPA+: Similar to MAX708EUA+, but available in an 8-pin DIP package.
2. MAX809SEUR+: Offers additional features like manual reset input and watchdog timer functionality.
3. MAX811TEUS+: Provides a push-pull output instead of an open-drain output for the reset signal.

These alternative models offer similar voltage monitoring and reset functions, but with slight variations in package type, additional features, or output configuration.

In conclusion, the MAX708EUA+ is a versatile IC that provides reliable voltage monitoring and reset functions in microcontroller-based systems. Its adjustable threshold, low power consumption, and wide operating voltage range make it suitable for various applications in different fields.