MAX811LEUS-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor with Manual Reset
• Characteristics: Low-power, precision voltage monitor with manual reset input
• Package: SOT-143
• Essence: Monitors the power supply voltage and provides a reset signal to the system when the voltage drops below a specified threshold
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Options: 2.93V, 3.08V, 3.3V, 4.38V
• Manual Reset Input: Active-low push-button input for manual reset
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 7µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX811LEUS-T has the following pin configuration:

| Pin Name | Description | |----------|-------------| | GND | Ground | | MR | Manual Reset Input | | RESET | Reset Output | | VCC | Supply Voltage |

Functional Features

1. Voltage Monitoring: The MAX811LEUS-T continuously monitors the supply voltage and compares it to the preset threshold.
2. Manual Reset: It provides a manual reset input that allows the user to manually reset the system.
3. Reset Output: When the supply voltage drops below the threshold, the MAX811LEUS-T asserts the reset output, signaling the system to reset.
4. Reset Timeout: The reset output remains asserted for a fixed timeout period after the supply voltage rises above the threshold.

Advantages and Disadvantages

Advantages

• Low-power consumption
• Precision voltage monitoring
• Manual reset capability
• Small package size (SOT-143)
• Wide operating temperature range

Disadvantages

• Limited reset threshold options
• Single-channel voltage monitoring

Working Principles

The MAX811LEUS-T operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the voltage drops below the preset threshold, the reset output is asserted, indicating a power failure or low voltage condition. The reset output remains active for a fixed timeout period after the voltage rises above the threshold to ensure stable operation.

Application Field Plans

The MAX811LEUS-T is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some potential application fields include:

1. Embedded Systems: Used in microcontroller-based systems to ensure proper operation during power fluctuations.
2. Industrial Automation: Provides voltage monitoring and reset capabilities in industrial control systems.
3. Consumer Electronics: Used in devices such as smart home appliances, IoT devices, and wearable gadgets to ensure reliable operation.

Alternative Models

1. MAX811L: Similar to MAX811LEUS-T but with different package options (SOT-23, SOT-23-5).
2. MAX813: Dual-channel voltage monitor with manual reset input.
3. MAX809: Voltage monitor with adjustable reset threshold and watchdog timer functionality.

Note: This entry provides a brief overview of the MAX811LEUS-T. For detailed information, please refer to the product datasheet and specifications provided by the manufacturer.

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