Maxim Integrated MAX6718UKZWD3+T Supervisory Circuit

The Maxim Integrated MAX6718UKZWD3+T is a highly reliable supervisory circuit designed to monitor power supplies in microprocessor (µP) and digital systems. It provides a significant layer of protection by ensuring that the system's power supply remains within acceptable limits, enhancing the overall system stability and reliability.

This compact supervisory IC is particularly well-suited for portable and space-constrained applications, thanks to its small SOT23 package. The MAX6718UKZWD3+T offers a factory-trimmed reset threshold voltage, catering to a wide variety of system requirements. This specific model is programmed to monitor a threshold voltage of 3.08V, which is a common value for systems operating at 3.3V.

One of the key features of the MAX6718UKZWD3+T is its ability to provide a precise monitoring function for the VCC power supply. It asserts a reset signal whenever the VCC falls below the preset threshold, and it maintains the reset condition for a minimum of 140ms after VCC has risen above the reset threshold. This ensures the system has adequate time to stabilize before resuming operation.

In addition to its monitoring capabilities, this supervisory circuit includes a manual reset input. This allows for a system reset to be triggered externally, which can be useful for system maintenance or in response to a software command. The reset output is available in either a push-pull or open-drain configuration, providing flexibility in interfacing with other components in the system.

The MAX6718UKZWD3+T operates over a wide temperature range of -40°C to +125°C, making it suitable for industrial applications that may experience extreme conditions. Its low supply current of 8µA (typical) ensures minimal power consumption, which is essential for battery-operated devices.

Maxim Integrated's commitment to high-quality and reliability is reflected in the MAX6718UKZWD3+T supervisory circuit, making it an excellent choice for designers looking to enhance the operational stability of their digital systems.