MAX6839XSD1+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, high-accuracy, reset output
• Package: 6-pin SOT23
• Essence: Monitors the voltage level of a power supply and provides a reset signal when the voltage falls 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: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6839XSD1+T has the following pin configuration:

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VCC: Positive supply voltage
5. TH: Threshold selection input
6. NC: No connection

Functional Features

• Monitors the supply voltage and asserts the reset output when the voltage drops below the selected threshold.
• Provides an adjustable reset timeout period to ensure proper system reset.
• Includes a manual reset input for external reset control.
• Low-power consumption, suitable for battery-powered applications.
• High accuracy in detecting voltage levels.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows for versatile use in various systems. - Adjustable reset timeout period offers flexibility in different applications. - Small package size enables space-saving designs. - Low-power consumption prolongs battery life.

Disadvantages: - Limited number of available threshold options. - Lack of additional features such as hysteresis adjustment.

Working Principles

The MAX6839XSD1+T operates by continuously monitoring the supply voltage connected to the VCC pin. When the voltage falls below the selected threshold, the reset output (RESET) is asserted low. The reset remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

The manual reset input (MR) allows for an external signal to assert a reset condition, overriding the voltage monitoring. This feature is useful during system testing or when a manual reset is required.

Detailed Application Field Plans

The MAX6839XSD1+T is commonly used in various applications where reliable voltage monitoring and reset functionality are essential. Some typical application fields include:

1. Microcontrollers: Ensures proper initialization and system reset during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides fault detection and recovery capabilities in critical control systems.
3. Automotive Electronics: Monitors battery voltage and initiates system reset if necessary.
4. Portable Devices: Protects sensitive components from undervoltage conditions and ensures safe operation.

Detailed and Complete Alternative Models

1. MAX6838XSD1+T: Similar to MAX6839XSD1+T but with different reset threshold options.
2. MAX6837XSD1+T: Voltage supervisor IC with adjustable reset timeout period.
3. MAX6389XSD1+T: Offers additional hysteresis adjustment for more precise voltage monitoring.

These alternative models provide similar functionality and can be considered based on specific requirements and preferences.

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