MAX811TEUS+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the power supply voltage of a system and generates a reset signal when the voltage drops below a predetermined threshold.
  • Ensures reliable operation by preventing the system from operating at insufficient voltage levels.
  • Suitable for use in various electronic devices, such as microcontrollers, microprocessors, and digital systems.
• Package: SOT-143
• Essence: Provides voltage monitoring and reset functionality to enhance system reliability.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V, and adjustable
• Reset Timeout Period: 140ms, 280ms, 560ms, or 1120ms
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX811TEUS+T IC has the following pin configuration:

____ RESET | | VCC | | GND |____| RESET#

• RESET: Output reset signal
• VCC: Power supply input
• GND: Ground connection
• RESET#: Active-low reset output

Functional Features

• Voltage Monitoring: Monitors the power supply voltage continuously.
• Reset Generation: Generates a reset signal when the voltage drops below the set threshold.
• Adjustable Threshold: Allows the threshold voltage to be adjusted according to the specific application requirements.
• Reset Timeout: Provides a programmable reset timeout period to ensure proper system recovery.
• Manual Reset Input: Allows an external manual reset input to override the internal reset generation.
• Power-On Reset: Generates a reset signal during power-up to ensure a controlled system start.

Advantages and Disadvantages

Advantages: - Enhances system reliability by preventing operation at insufficient voltage levels. - Adjustable threshold voltage for flexibility in different applications. - Programmable reset timeout period for customized system recovery time. - Manual reset input for external control. - Power-on reset functionality for controlled system start.

Disadvantages: - Limited supply voltage range (1.2V to 5.5V). - Fixed package type (SOT-143) may not be suitable for all applications.

Working Principles

The MAX811TEUS+T monitors the power supply voltage using an internal voltage reference and comparator circuit. When the voltage drops below the set threshold, the reset output is activated, indicating a low-voltage condition. The reset signal remains active until the voltage rises above the threshold or the reset timeout period elapses. The adjustable threshold and reset timeout options allow customization according to specific application requirements.

Detailed Application Field Plans

The MAX811TEUS+T can be used in various electronic devices and systems that require reliable voltage monitoring and reset functionality. Some potential application fields include:

1. Microcontrollers and Microprocessors: Ensures proper operation and prevents data corruption by resetting the system when the power supply voltage drops below the threshold.
2. Digital Systems: Protects digital circuits from operating at insufficient voltage levels, preventing errors and malfunctions.
3. Battery-Powered Devices: Monitors battery voltage to prevent excessive discharge and damage to the device.
4. Industrial Control Systems: Provides reliable reset functionality to ensure safe and controlled operation of industrial equipment.
5. Automotive Electronics: Enhances the reliability of automotive electronic systems by monitoring and resetting the system during voltage fluctuations or power supply issues.

Detailed and Complete Alternative Models

Some alternative models to the MAX811TEUS+T with similar functionality include:

1. MAX809: Voltage Monitor and Reset Circuit with fixed threshold options.
2. MAX813: Voltage Monitor and Reset Circuit with adjustable threshold and watchdog timer functionality.
3. MAX810: Voltage Monitor and Reset Circuit with manual reset input and adjustable threshold options.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific application requirements.

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