The MAX6808UR26 from Maxim Integrated is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of protection against the loss of code execution integrity due to power failures or unexpected system shutdowns.

This device ensures that the µP resets cleanly during power-up, power-down, or brown-out conditions. With a factory-trimmed reset threshold voltage of 2.63V, the MAX6808UR26 is specifically tailored for 2.7V to 3.3V powered circuits, making it an ideal choice for portable and battery-powered electronics.

The reset output of the MAX6808UR26 is guaranteed to be in the correct logic state for V<sub>CC down to 1.0V, ensuring reliable operation even during low voltage conditions. The reset timeout is precisely controlled to be 140ms minimum, providing ample time for the system to stabilize before the µP begins operation.

One of the key features of the MAX6808UR26 is its low supply current of only 5.5µA (typical), which contributes to the conservation of battery life in portable applications. Additionally, the device comes in a small SOT23-3 package, making it an excellent choice for space-constrained applications.

Key Features:

• Precision factory-set V<sub>CC reset thresholds suitable for 2.7V to 3.3V powered circuits
• Low power consumption with 5.5µA typical supply current
• Guaranteed reset valid to V<sub>CC = 1.0V
• 140ms minimum power-on reset timeout period
• Compact SOT23-3 package

Overall, the MAX6808UR26 is a robust solution for system stability, offering a high degree of protection for microprocessors by ensuring proper operation through power-up, power-down, and brown-out events. Its low power consumption and small footprint make it an excellent choice for a wide range of applications, including portable devices, embedded systems, and IoT devices.