MAX811TEUS+TG40

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Generator
• Characteristics:
  • Monitors the power supply voltage of a system and generates a reset signal when the voltage drops below a predefined threshold.
  • Provides a reliable way to ensure proper operation of microcontrollers, microprocessors, and other digital systems.
• Package: SOT-143
• Essence: The MAX811TEUS+TG40 is a voltage monitor and reset generator IC designed to enhance the reliability of electronic systems by monitoring the power supply voltage and generating a reset signal when necessary.
• Packaging/Quantity: The MAX811TEUS+TG40 is available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period: 140ms (min)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX811TEUS+TG40 has the following pin configuration:

1. GND: Ground connection
2. MR: Manual Reset Input
3. RESET: Active-Low Reset Output
4. VCC: Power Supply Input

Functional Features

• Voltage Monitoring: The MAX811TEUS+TG40 continuously monitors the power supply voltage and compares it to the predefined threshold voltage.
• Reset Generation: When the power supply voltage drops below the threshold, the MAX811TEUS+TG40 generates an active-low reset signal to initiate a system reset.
• Manual Reset: The MR pin allows for manual reset initiation, overriding the voltage monitoring function.
• Reset Timeout: After the power supply voltage rises above the threshold, the reset signal remains active for a minimum timeout period of 140ms to ensure stable system operation.

Advantages and Disadvantages

Advantages: - Enhances system reliability by providing voltage monitoring and reset generation functionality. - Wide supply voltage range allows for compatibility with various systems. - Manual reset option provides flexibility in system control.

Disadvantages: - Limited threshold voltage options may not suit all applications. - Reset timeout period may not be adjustable, limiting customization options.

Working Principles

The MAX811TEUS+TG40 operates by continuously monitoring the power supply voltage using an internal voltage comparator. When the voltage drops below the predefined threshold, the comparator triggers the generation of an active-low reset signal. This signal remains active for a minimum timeout period after the voltage rises above the threshold to ensure stable system operation. The manual reset input allows for immediate system reset initiation, bypassing the voltage monitoring function.

Detailed Application Field Plans

The MAX811TEUS+TG40 is commonly used in various electronic systems where reliable voltage monitoring and reset generation are critical. Some application fields include:

1. Microcontroller Systems: Ensures proper operation of microcontrollers by initiating a reset when the power supply voltage falls below the threshold.
2. Microprocessor Systems: Provides a reliable reset mechanism for microprocessors, preventing erratic behavior due to voltage fluctuations.
3. Digital Systems: Enhances the stability of digital systems, such as data loggers, by monitoring the power supply voltage and generating resets when necessary.
4. Embedded Systems: Improves the reliability of embedded systems, such as IoT devices, by ensuring consistent operation even under varying voltage conditions.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MAX811TEUS+TG40 include:

1. MAX809: Voltage Monitor and Reset Generator IC with adjustable threshold voltage options.
2. MAX813: Dual Voltage Monitor and Reset Generator IC for systems with multiple power supply sources.
3. MAX823: Voltage Monitor and Reset Generator IC with adjustable reset timeout period.

These alternative models provide options for different threshold voltages, additional features, or customization capabilities to suit specific application requirements.

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