MAX809REUR+T

Product Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Reset Output, Active High, Open Drain or Open Collector, Push-Pull, 1 Reset, Manual Reset, Watchdog Timer, Adjustable, Fixed, SOT-23-3 Package
• Essence: MAX809REUR+T is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other digital circuitry when the voltage drops below a predetermined threshold.
• Packaging/Quantity: SOT-23-3 package, available in tape and reel packaging with a quantity of 3000 units per reel.

Specifications

• Supply Voltage Range: 1.0V to 5.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 3.30V, 4.38V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX809REUR+T has three pins:

1. GND: Ground pin
2. RESET: Reset output pin
3. VCC: Power supply input pin

Functional Features

• Low quiescent current consumption
• Precision monitoring of power supply voltage
• Manual reset input for immediate system reset
• Watchdog timer for monitoring system activity
• Adjustable threshold voltage options
• Open drain or push-pull reset output configuration

Advantages and Disadvantages

Advantages: - Low power consumption - Wide operating voltage range - Adjustable threshold voltage - Small package size

Disadvantages: - Limited reset timeout period options - Lack of additional features like power-on reset delay

Working Principles

The MAX809REUR+T operates by continuously monitoring the voltage level at the VCC pin. When the voltage drops below the threshold voltage set by the user, the RESET pin is activated, providing a reset signal to the connected microcontroller or digital circuitry. The manual reset input allows for an immediate system reset, while the watchdog timer ensures that the system remains active and responsive.

Detailed Application Field Plans

The MAX809REUR+T is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some of the typical application fields include:

1. Embedded Systems: Used to monitor the power supply voltage in microcontroller-based embedded systems, ensuring proper operation and preventing data corruption during power fluctuations.
2. Industrial Automation: Employed in industrial automation systems to monitor the power supply voltage and initiate a system reset if necessary, ensuring uninterrupted operation and preventing damage to equipment.
3. Automotive Electronics: Integrated into automotive electronic systems to monitor the battery voltage and provide a reset signal to critical components in case of voltage drops, enhancing system reliability and safety.
4. Consumer Electronics: Utilized in consumer electronic devices such as smartphones, tablets, and gaming consoles to monitor the power supply voltage and initiate a reset if the voltage falls below the specified threshold, preventing system crashes and data loss.

Detailed and Complete Alternative Models

Some alternative models to MAX809REUR+T with similar functionality and characteristics include:

1. MAX811SEUS+T
2. MAX810SEUR+T
3. MAX803REXR+T
4. MAX6315US26D3-T
5. MAX6381XR22D3-T

These alternative models offer comparable voltage monitoring and reset functionality, but may have slight differences in specifications and package options.

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