Maxim Integrated MAX6801UR46D3+T Microprocessor Reset Circuit

The MAX6801UR46D3+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability through its ability to reset a µP during power-up, power-down, and brownout conditions. The compact SOT-23 package makes it an ideal choice for space-constrained applications.

This device is specifically engineered to maintain system integrity by asserting a reset signal whenever the VCC supply voltage drops below a preset threshold. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, ensuring the system has adequate time to stabilize before the processor starts operating. This feature is crucial for preventing system errors and data corruption that can occur if the µP begins to operate with an unstable power supply.

The MAX6801UR46D3+T operates with a nominal threshold voltage of 4.63V, tailored for systems that run on 5V power supplies. The reset output is available in both active-low (push-pull) and active-high (open-drain) configurations, providing designers with flexibility to interface with different µP and logic families.

Additional features of the MAX6801UR46D3+T include a low supply current of 1.6µA (typ), which is beneficial for battery-powered devices where power conservation is crucial. The device also has an operating temperature range of -40°C to +125°C, making it suitable for industrial applications that may be exposed to extreme environments.

Overall, the MAX6801UR46D3+T is a robust and reliable solution for system monitoring, with its quick response to power failures and minimal power consumption. Its compact form factor and ease of integration make it a popular choice among engineers seeking to enhance the operational stability of their digital systems.

Whether used in portable devices, computers, controllers, or other digital hardware, the MAX6801UR46D3+T provides a layer of protection that is essential for maintaining system performance and longevity.