Product Overview: MAX809J-4.00 by Maxim Integrated

The MAX809J-4.00 is a precision microprocessor (µP) reset circuit developed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant level of system reliability and accuracy required in critical applications. This compact and efficient component ensures that the µP and its peripherals are reset properly during a power failure or whenever the voltage supplied falls below a predetermined value.

Key Features

• Voltage Monitoring: The MAX809J-4.00 monitors the power supply voltage and maintains the reset output in the active condition until the supply voltage exceeds the reset threshold level of 4.00V.
• Reset Timeout: After the supply voltage exceeds the reset threshold, the reset output remains in the active state for a reset timeout period, allowing the power supply and processor to stabilize.
• Low Power Consumption: Designed for low power consumption, this device is ideal for portable and battery-powered equipment.
• High Accuracy: With precision temperature-compensated voltage reference and comparator circuitry, the MAX809J-4.00 ensures high accuracy in reset threshold levels.
• Manual Reset: A manual reset feature allows for a system reset to be initiated with an external switch.

Applications

The MAX809J-4.00 is versatile and can be used in a wide range of applications, including:

• Computers and controllers
• Intelligent instruments
• Portable/Battery-powered equipment
• Embedded systems

Package and Availability

This device is available in a compact SOT-23 package, making it suitable for space-constrained applications. Its industry-standard footprint ensures compatibility with many PCB layouts.

Maxim Integrated's commitment to quality means that the MAX809J-4.00 is manufactured to high standards, ensuring reliable performance under varying conditions and across different applications. For designers looking for a robust and reliable power supply monitoring solution, the MAX809J-4.00 offers a perfect blend of performance, power efficiency, and design flexibility.