The MAX810REUR-T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant level of system reliability and accuracy required in critical applications by ensuring that the µP and its associated hardware are reset to a known state during power-up, power-down, or brown-out conditions.

The MAX810REUR-T operates by monitoring the VCC voltage level and maintains the reset output in the active condition until VCC has reached the proper operating level and maintains it for a specified period, ensuring a proper system reset. The reset output remains operational with VCC as low as 1.2V, which is suitable for low-voltage applications.

This device is characterized by its low power consumption, consuming only 17µA (typ) of supply current, making it an excellent choice for portable and battery-operated equipment. The MAX810REUR-T comes in a compact SOT-23 package, which is ideal for space-constrained applications.

Key features of the MAX810REUR-T include:

• Precision monitoring of 3V, 3.3V, and 5V power-supply voltages.
• 140ms min power-on reset pulse width, which ensures a reliable system reset.
• Active-low RESET output.
• Guaranteed RESET valid to VCC = 1V for low-voltage operation.
• Low supply current of 17µA (typical), which is ideal for battery-powered devices.
• Immunity to short VCC transients, ensuring stable operation under fluctuating power conditions.

Typical applications for the MAX810REUR-T include microprocessor systems, computers, controllers, intelligent instruments, portable/battery-powered equipment, and embedded systems. Its ability to provide a predictable, reliable reset function without any external components makes it a plug-and-play solution for system stability.

Maxim Integrated's commitment to quality and reliability is evident in the MAX810REUR-T, providing designers with a simple and efficient way to enhance system integrity and ensure proper operation through all conditions.