MAX811TEUS-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Generator
• Characteristics:
  • Low-power consumption
  • Wide supply voltage range
  • Adjustable reset threshold voltage
  • Active-low reset output
• Package: SOT-143
• Essence: The MAX811TEUS-T is a voltage monitor and reset generator IC that provides a reliable way to monitor the power supply voltage of a system and generate a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: The MAX811TEUS-T is available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Range: 1.2V to VCC - 0.2V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX811TEUS-T has the following pin configuration:

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

Functional Features

• Voltage Monitoring: The MAX811TEUS-T continuously monitors the power supply voltage and compares it to the user-adjustable reset threshold voltage.
• Reset Generation: When the power supply voltage falls below the reset threshold, the MAX811TEUS-T generates an active-low reset signal on the RESET pin.
• Manual Reset: The MR pin allows for manual resetting of the device by pulling it low.
• Power-On Reset: The MAX811TEUS-T includes a power-on reset circuit that ensures a proper reset signal is generated during power-up.

Advantages and Disadvantages

Advantages: - Low-power consumption makes it suitable for battery-powered applications. - Wide supply voltage range allows for compatibility with various systems. - Adjustable reset threshold voltage provides flexibility in setting the desired voltage level for triggering a reset. - Active-low reset output simplifies interfacing with other components.

Disadvantages: - The SOT-143 package may require careful handling during assembly due to its small size. - Limited reset timeout period may not be suitable for applications requiring longer reset delays.

Working Principles

The MAX811TEUS-T operates by continuously monitoring the power supply voltage using an internal voltage comparator. When the voltage falls below the user-adjustable reset threshold, the comparator triggers the generation of an active-low reset signal. This signal remains active until the power supply voltage rises above the reset threshold or a manual reset is initiated.

Detailed Application Field Plans

The MAX811TEUS-T can be used in various applications where reliable voltage monitoring and reset generation are required. Some potential application fields include:

1. Microcontroller Systems: The MAX811TEUS-T ensures proper system initialization by generating a reset signal when the power supply voltage drops below a certain level.
2. Embedded Systems: It can be used to monitor the power supply voltage of embedded systems and initiate a reset if necessary.
3. Industrial Control Systems: The MAX811TEUS-T provides a reliable way to monitor the power supply voltage in industrial control systems, ensuring stable operation and preventing data corruption.

Detailed and Complete Alternative Models

Some alternative models to the MAX811TEUS-T that offer similar functionality include:

1. MAX809: This series of voltage monitors and reset generators from Maxim Integrated offers various options for reset threshold voltage, timeout period, and package types.
2. LTC2937: A precision voltage monitor and reset generator IC from Linear Technology that provides adjustable reset thresholds and long timeout periods.
3. TPS3808: Texas Instruments' voltage supervisor IC series that offers adjustable reset thresholds, manual reset input, and various package options.

These alternative models can be considered based on specific application requirements and desired features.

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