Maxim Integrated MAX6421XS16+T Microprocessor Supervisory Circuit

The MAX6421XS16+T is a highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated, a leader in analog and mixed-signal engineering. This compact device is engineered to monitor power supplies in µP and digital systems, providing a crucial safeguard against power failures or low voltage conditions. It is an essential component for maintaining the integrity of electronic systems, ensuring that processors and other critical components operate within their specified voltage ranges.

With a precision factory-set V_CC reset threshold of 1.575V, the MAX6421XS16+T is tailored for systems that operate at low voltage levels. The device offers a ±1.5% reset threshold accuracy over the entire temperature range of -40°C to +125°C, which is critical for systems requiring consistent performance regardless of external conditions.

One of the standout features of the MAX6421XS16+T is its low power consumption. The device typically consumes only 1.5µA of supply current, making it an excellent choice for power-sensitive applications, including portable and battery-operated equipment. This efficient use of power helps to extend battery life and reduce the overall energy footprint of the system it is integrated into.

The supervisory circuit comes in a compact, 4-pin SC70 package, which is ideal for space-constrained applications. It also includes a manual reset input, allowing for a system reset to be triggered with an external switch or logic signal. This manual reset feature provides an additional layer of control for system maintenance or emergency recovery procedures.

Furthermore, the MAX6421XS16+T offers an active-low, open-drain reset output, which remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold. This ensures that the µP has enough time to stabilize and execute a proper startup sequence after a reset event.

Overall, the MAX6421XS16+T from Maxim Integrated is a robust and precise solution for voltage monitoring in digital systems. Its combination of low power consumption, high accuracy, and compact form factor make it a versatile choice for designers looking to enhance the reliability and performance of their electronic products.