The Maxim Integrated MAX6808SA46 is a compact, highly precise microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required for managing power failures or unexpected system shutdowns. This component is a crucial part of any system that demands consistent operation and protection against data loss or hardware damage due to power issues.

The MAX6808SA46 operates by asserting a reset signal whenever the V<sub>CC supply voltage falls below a preset threshold, ensuring that the µP resets cleanly during power-up, power-down, and brownout conditions. The reset output remains asserted for a minimum timeout period after V<sub>CC has risen above the reset threshold level, providing the system with ample time to stabilize.

Key features of the MAX6808SA46 include:

• Precision Monitoring: This device offers a factory-trimmed reset threshold suitable for monitoring 4.63V power supplies, ensuring high accuracy and reliability.
• Low Power Consumption: With its low supply current of 1.6µA (typical), it is an excellent choice for portable and battery-operated applications.
• Manual Reset Input: It provides a manual reset input that allows for a system reset to be triggered with an external pushbutton or logic signal.
• Reset Timeout: The minimum reset timeout of 140ms (minimum) ensures proper system reset and recovery.
• Operating Temperature Range: The device is designed to operate over the extended temperature range of -40°C to +125°C, making it suitable for industrial applications.
• Compact Package: Offered in a space-saving 8-pin SO package, it facilitates integration into system designs where board space is at a premium.

The MAX6808SA46 is ideal for use in systems that require a high degree of stability and accuracy in their power supply monitoring, such as computers, controllers, intelligent instruments, and portable consumer electronics. Its easy integration, low power consumption, and precise voltage monitoring capabilities make it a reliable choice for designers looking to enhance system integrity.