The MAX809J from Maxim Integrated 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, thus enhancing the reliability and performance of the system.

Key Features

• Precision Monitoring: The device is capable of monitoring the system voltage with a precision factory-set reset threshold, ensuring accurate detection of under-voltage conditions.
• Low Power Consumption: With its low power consumption, the MAX809J is an ideal choice for power-sensitive applications, helping to extend battery life in portable devices.
• Manual Reset Input: It features a manual reset input that allows for a manual reset, enabling the system to be restarted on demand.
• Reset Output: The reset output is available in both active-high and active-low configurations, providing versatility in interfacing with different µP and logic systems.
• Immune to Short Vcc Transients: The device is designed to ignore short duration transients on the Vcc line, which helps to prevent false triggering of the reset signal.

Applications

The MAX809J is well-suited for a wide array of applications across various industries. It is commonly used in:

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

Package and Temperature Range

The MAX809J is available in a small SOT-23 package, making it easy to integrate into space-constrained designs. It operates over an extended temperature range, ensuring reliable performance in diverse operating conditions.

With its robust feature set and Maxim Integrated's reputation for quality, the MAX809J is an excellent choice for ensuring system stability and integrity across a multitude of applications.