The MAX811REUR-T is a compact, highly integrated microprocessor (μP) supervisory circuit designed by Maxim Integrated to monitor power supplies in μP and digital systems. It provides a significant level of system reliability and accuracy required for critical electronic applications. This device is particularly suitable for portable and space-constrained applications due to its small SOT23 packaging.

The MAX811REUR-T is engineered to maintain system integrity by monitoring the power supply voltage level. It asserts a reset signal whenever the VCC supply voltage falls below a preset threshold, ensuring that the μP resets cleanly during power-up, power-down, and brown-out conditions. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing a stable system reset.

One of the key features of the MAX811REUR-T is its precision factory-set VCC reset threshold levels which cater to a wide variety of applications. This device offers a low supply current, making it an energy-efficient solution for battery-operated devices. Additionally, the reset comparator is designed to ignore fast transients on VCC, which helps in preventing false resets from occurring, thus enhancing system reliability.

Other notable features include:

• Immunity to short VCC transients
• Ability to assert reset with VCC down to 1.2V
• Low power consumption
• 150ms minimum power-on reset pulse width
• Debounced manual reset input

With its combination of features, the MAX811REUR-T is an excellent choice for use in microcontroller systems, computers, controllers, intelligent instruments, portable/battery-powered equipment, and other critical μP-powered systems where precise monitoring of the power supply is required to ensure proper operation.

Maxim Integrated's commitment to high-quality and reliability ensures that the MAX811REUR-T voltage monitor is a dependable component for safeguarding your electronic systems from the adverse effects of unpredictable power supply conditions.