Maxim Integrated MAX6381XR25D2+T Microprocessor Reset Circuit

The Maxim Integrated MAX6381XR25D2+T is a high-quality microprocessor (µP) supervisory circuit designed to monitor the power supplies in µP and digital systems. It provides a precise, low-power method to monitor system voltages, ensuring that the µP resets to a known state during a power failure. This tiny, efficient device is an essential component for maintaining system reliability and performance.

The MAX6381XR25D2+T comes in a compact, 3-pin SC70 package, making it ideal for space-constrained applications. Its small footprint does not compromise its functionality, as it offers a factory-set reset threshold voltage of 2.5V. This voltage level is suitable for managing 2.5V powered circuits, providing a reliable reset output during system power-up, power-down, or brownout conditions.

One of the key features of this reset circuit is its low power consumption, with a typical supply current of only 1µA. This makes it an excellent choice for portable and battery-operated devices where power efficiency is critical. Additionally, the MAX6381XR25D2+T has an active-low, push-pull reset output, which remains asserted for a minimum reset timeout period of 140ms after V_CC has risen above the reset threshold. This ensures that the µP has ample time to stabilize and start up correctly after a reset event.

The device also boasts a wide operating temperature range of -40°C to +125°C, making it suitable for use in various environments, including industrial and automotive applications. Its robust design ensures reliable operation under extreme conditions, contributing to the overall durability of the systems it is integrated into.

With its combination of features, the Maxim Integrated MAX6381XR25D2+T is a versatile and dependable choice for system designers looking to enhance the operational stability of their digital systems. Whether used in complex computing devices, consumer electronics, or automotive systems, this microprocessor reset circuit stands out for its precision, low power consumption, and compact size.