MAX708SCSA+T

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Reset/Power-On Reset, Active High, Open Drain, Push-Pull Output, 1 Channel, SOT-23-8 Package
• Essence: MAX708SCSA+T is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other digital circuitry when the voltage drops below a predetermined threshold.
• Packaging/Quantity: The MAX708SCSA+T comes in a SOT-23-8 package and is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.63V, 3.08V, 4.38V, and Adjustable
• Reset Timeout Period: 140ms (min)
• Quiescent Current: 7µA (typ)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX708SCSA+T has the following pin configuration:

```

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| | --| RESET | --| GND | --| MR | --| VCC | --| RESET | --| RESET | --| RESET | --| RESET | |___________| ```

Functional Features

• Voltage Monitoring: The MAX708SCSA+T continuously monitors the supply voltage and asserts the reset signal when it falls below the specified threshold.
• Reset Signal Generation: When the supply voltage drops below the threshold, the MAX708SCSA+T generates a reset signal to ensure proper operation of the microcontroller or digital circuitry.
• Adjustable Threshold: The IC offers an adjustable threshold option, allowing flexibility in setting the voltage level at which the reset signal is triggered.
• Low Power Consumption: With a quiescent current of only 7µA, the MAX708SCSA+T minimizes power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Adjustable threshold provides flexibility in voltage monitoring. - Low power consumption extends battery life in portable devices. - Small package size (SOT-23-8) enables space-saving designs.

Disadvantages: - Lack of built-in hysteresis may result in potential noise-related issues during voltage transitions. - Limited number of channels restricts simultaneous monitoring of multiple power supplies.

Working Principles

The MAX708SCSA+T operates by comparing the supply voltage with a reference voltage. When the supply voltage drops below the threshold voltage, the internal comparator triggers the reset signal. This signal remains active until the supply voltage rises above the threshold and a timeout period elapses. The reset signal ensures that the microcontroller or digital circuitry starts in a known state after a power-on or brownout event.

Detailed Application Field Plans

The MAX708SCSA+T finds applications in various fields, including:

1. Embedded Systems: It is commonly used in microcontroller-based embedded systems to ensure reliable operation during power fluctuations.
2. Industrial Automation: The IC provides voltage supervision in industrial automation systems, preventing data corruption or erratic behavior due to power supply issues.
3. Automotive Electronics: It plays a crucial role in automotive electronics, where stable power supply monitoring is essential for safety-critical systems.
4. Consumer Electronics: The MAX708SCSA+T is utilized in consumer electronic devices such as smart home appliances, ensuring proper functioning even under varying power conditions.

Detailed and Complete Alternative Models

Some alternative models to the MAX708SCSA+T include:

1. MAX809: Similar voltage supervisor IC with various threshold options and package types.
2. ADM708: Voltage monitor with adjustable threshold and open-drain output.
3. TPS3808: Supervisor IC with programmable delay time and wide supply voltage range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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