DS1811-5+T&R

Product Overview

Category

DS1811-5+T&R belongs to the category of electronic components.

Use

It is primarily used for voltage monitoring and reset functions in various electronic devices.

Characteristics

• Voltage monitoring: DS1811-5+T&R monitors the supply voltage and provides a reset signal when it falls below a specified threshold.
• Reset function: It ensures that the microcontroller or other integrated circuits start operating correctly after power-up or voltage fluctuations.
• Package: DS1811-5+T&R comes in a small surface-mount package, making it suitable for compact electronic designs.
• Essence: The essence of this product lies in its ability to provide reliable voltage monitoring and reset functionality.

Packaging/Quantity

DS1811-5+T&R is typically packaged in reels and is available in quantities of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Threshold Voltage Options: 4.63V, 4.38V, 4.25V, 4.00V, 3.08V, 2.93V, 2.80V, 2.63V
• Reset Timeout Period: Adjustable from 140ms to 1120ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

DS1811-5+T&R has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. RESET: Output reset signal
4. MR: Manual reset input (optional)

Functional Features

1. Voltage Monitoring: DS1811-5+T&R continuously monitors the supply voltage and compares it with the preset threshold voltage.
2. Reset Signal Generation: When the supply voltage drops below the threshold, DS1811-5+T&R generates a reset signal to ensure proper functioning of the connected circuits.
3. Adjustable Timeout Period: The reset timeout period can be adjusted according to the specific requirements of the application.
4. Manual Reset Option: DS1811-5+T&R provides an optional manual reset input for immediate system reset.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality
• Small package size suitable for compact designs
• Wide supply voltage range allows compatibility with various systems
• Adjustable timeout period for flexibility in different applications

Disadvantages

• Limited threshold voltage options may not cover all voltage monitoring requirements
• Lack of advanced features compared to more specialized voltage monitoring ICs

Working Principles

DS1811-5+T&R operates by continuously monitoring the supply voltage using an internal voltage comparator. When the voltage falls below the preset threshold, it triggers the generation of a reset signal. This signal remains active until the supply voltage rises above the threshold and the adjustable timeout period elapses.

Detailed Application Field Plans

DS1811-5+T&R finds applications in various electronic devices where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontroller-based Systems: DS1811-5+T&R ensures proper startup and operation of microcontroller-based systems, preventing erratic behavior due to voltage fluctuations.
2. Industrial Control Systems: It provides voltage monitoring and reset capabilities in industrial control systems, ensuring stable and safe operation.
3. Embedded Systems: DS1811-5+T&R is suitable for embedded systems where reliable voltage monitoring is essential for maintaining system integrity.
4. Power Supply Units: It can be used in power supply units to monitor the output voltage and initiate a reset if necessary.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to DS1811-5+T&R are:

1. MAX823: This voltage monitor and reset IC offers a wide range of threshold voltage options and additional features such as watchdog timer functionality.
2. ADM6315: It provides voltage monitoring and reset functions with adjustable timeout periods and various threshold voltage options.
3. MCP809: This microcontroller supervisory circuit offers voltage monitoring, reset generation, and manual reset input.

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

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