Maxim Integrated MAX6412UK30+T Microprocessor Reset Circuit

The Maxim Integrated MAX6412UK30+T is a highly reliable microprocessor (μP) supervisory circuit designed to monitor power supplies in μP and digital systems. It provides a significant function by ensuring that the μP resets cleanly during power-up, power-down, and brownout conditions. With a compact SOT-23 package, this device is engineered to maintain system integrity and prevent code execution errors by asserting a reset signal whenever the VCC supply voltage drops below the factory-set reset threshold level.

The reset output from the MAX6412UK30+T remains asserted for a minimum reset timeout period after VCC has risen above the reset threshold level, ensuring that the μP has sufficient time to stabilize and that the system is fully operational before the reset signal is deasserted. This feature is crucial for systems that require a stable and reliable startup.

One of the standout features of the MAX6412UK30+T is its precision factory-set VCC reset threshold of 3.0V, which is suitable for applications running at standard 3.3V supply voltages. The low supply current of typically 1.2µA makes it an excellent choice for portable and battery-operated equipment where power conservation is critical.

Additionally, the device offers a manual reset input, allowing the system to be reset via an external button or logic signal. This input is debounced, ensuring that only clean reset signals are recognized, which prevents false triggering from noisy inputs. The MAX6412UK30+T also features an active-low, open-drain reset output, providing flexibility in interfacing with different logic levels and allowing for wired-OR configurations.

Designed for a wide range of applications including computers, controllers, intelligent instruments, and portable/battery-powered equipment, the Maxim Integrated MAX6412UK30+T is a robust solution for system management and protection. Its extended temperature range from -40°C to +125°C ensures reliable operation in harsh environments, making it suitable for industrial and automotive applications as well.

Overall, the MAX6412UK30+T is a testament to Maxim Integrated's commitment to providing high-quality, precision-engineered solutions for critical system monitoring functions.