Maxim Integrated MAX6816EUS - Single/Dual Low-Voltage, Low-Power µP Supervisory Circuits

The MAX6816EUS from Maxim Integrated is a compact, single-channel supervisory circuit designed to enhance the reliability of low-voltage, microprocessor (µP) systems. This device provides essential monitoring functions by supervising the power supply voltage and asserting a reset signal to the µP whenever necessary. It is an ideal solution for portable and battery-powered electronics where power conservation is crucial.

With a low supply current of only 1µA, the MAX6816EUS is optimized for energy-saving applications. It operates over a wide voltage range of 1.2V to 5.5V, making it suitable for monitoring 3.3V and 5V power supplies as well as battery-operated equipment. The reset output is available in both push-pull and open-drain configurations, ensuring compatibility with a variety of microprocessor systems and allowing for the possibility of wired-OR connections.

The device features a precision factory-set reset threshold voltage, which is critical for maintaining system integrity. The reset signal is guaranteed to remain asserted for a minimum reset timeout period of 140ms after the supply voltage rises above the reset threshold level, providing ample time for the system to stabilize upon power-up or during a brownout condition.

Encased in a space-saving SOT-143 package, the MAX6816EUS is designed for minimal footprint on PCBs, an essential characteristic for modern, space-constrained electronic designs. Additionally, it includes a manual reset input that allows the user to trigger a system reset with an external push-button or logic signal, offering enhanced control and diagnostic capabilities.

Overall, the MAX6816EUS supervisory circuit is a reliable and versatile component that offers critical protection for microprocessor-based systems, ensuring proper operation through power fluctuations and enabling the design of more robust and dependable electronics.