The MAX850ESA, part number C70673, is a high-performance, low-voltage microprocessor (µP) supervisory circuit produced by Maxim Integrated. This device is designed to monitor power supplies in µP and digital systems to ensure proper operation during power-up, operation, and power-down states.

The MAX850ESA provides a multitude of features that make it an ideal choice for system reliability. It includes a precision voltage monitor with a factory-set reset threshold voltage. This function ensures that the µP resets consistently during power-up, power-down, or 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.

In addition to the reset function, this supervisory circuit offers a watchdog timer that monitors the µP activity. If the µP fails to strobe the watchdog input within a preset timeout period, the MAX850ESA will assert a system reset, thereby providing an additional layer of system security.

The MAX850ESA operates over a wide voltage range, typically from 1V to 5.5V, which makes it suitable for low-power applications. Its low supply current of 17µA (typical) is particularly beneficial for battery-operated devices where power efficiency is crucial.

This device is available in an 8-pin SO package, which is ideal for space-constrained applications. The MAX850ESA's compact form factor, combined with its robust feature set, makes it a versatile component for a variety of applications, including computers, controllers, intelligent instruments, and portable consumer electronics.

Maxim Integrated's commitment to quality ensures that the MAX850ESA meets stringent industry standards for performance and reliability, making it a trusted choice for engineers and designers looking to enhance system integrity and extend product lifecycles.