Product Overview: NXP MAX809S Microprocessor Reset Circuit

The NXP MAX809S is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial function by ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. The device's simplicity and effectiveness make it an essential component for maintaining system reliability and robustness.

Key Features

• Precision Monitoring: With precision factory-trimmed thresholds, the MAX809S monitors the power supply voltage levels with high accuracy, ensuring that the system is protected from unpredictable power fluctuations.
• Low Power Consumption: Designed for energy-efficient applications, the device operates with minimal power consumption, making it suitable for battery-operated systems.
• Manual Reset Input: An additional feature of the MAX809S is the manual reset input, which allows for an external trigger to initiate a system reset, providing designers with greater control over the reset logic.
• Reset Timeout: After a minimum power supply voltage is detected, the reset output is asserted for a fixed timeout period, allowing the system's microprocessor and other circuits enough time to stabilize.
• Wide Operating Voltage Range: The device supports a broad range of supply voltages, accommodating various digital systems and applications.
• Temperature Range: The MAX809S is designed to operate over a wide temperature range, making it suitable for harsh environments.
• Compact Packaging: Available in a small SOT-23 package, the MAX809S saves valuable board space and is ideal for space-constrained applications.

Applications

The NXP MAX809S is versatile and can be employed in a multitude of applications where reliable system operation is critical. Common use cases include:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Devices
• Industrial Equipment
• Consumer Electronics

In summary, the NXP MAX809S is a reliable and essential component for any digital system requiring precise monitoring and control of the power supply to ensure proper initialization and operation of microprocessors and their peripherals.