Maxim Integrated MAX6864UK26D3S Microprocessor Reset Circuit

The Maxim Integrated MAX6864UK26D3S is a highly reliable and precision microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +2.5V, +3V, +3.3V, and +5V powered circuits.

This compact supervisory circuit is particularly well-suited for portable and small electronics, where space is at a premium and high levels of integration are valued. The MAX6864UK26D3S comes in a small SOT23 package, making it ideal for applications where space-saving is crucial, such as handheld devices, laptops, and IoT gadgets.

The device features a factory-set reset threshold voltage of 2.63V, which helps to ensure that the µP resets reliably on power-up, power-down, and brownout conditions. The reset output remains asserted for a minimum timeout period of 140ms after V_CC has risen above the reset threshold, providing the system with ample time to stabilize during power-up.

Additional features of the MAX6864UK26D3S include a manual reset input, which allows for a system reset to be triggered with an external pushbutton or logic signal. This feature enhances the flexibility and control for system designers, allowing for resets to be initiated as needed by the user or system conditions.

The device operates over a wide temperature range of -40°C to +125°C, making it suitable for use in various environments, from industrial applications to outdoor electronics. The low supply current of 5.5µA (typical) is another benefit, ensuring minimal power consumption and thus preserving battery life in portable applications.

In summary, Maxim Integrated's MAX6864UK26D3S is a robust and compact solution for system monitoring and reset functions. Its precision voltage monitoring, small form factor, and additional features like manual reset make it an excellent choice for a wide range of applications that require reliable operation and efficient use of space.