Maxim Integrated MAX6364LUT26+T Supervisory Circuit

The MAX6364LUT26+T is a highly reliable supervisory circuit designed by Maxim Integrated to monitor power supplies in microprocessor (µP) systems. This compact, low-power component provides excellent circuit monitoring solutions, ensuring that your system operates within safe voltage thresholds and maintains proper functionality.

At the heart of this device is its ability to provide a reset signal to the µP whenever the VCC supply voltage falls below a preset threshold, ensuring that the µP restarts in a known state. The MAX6364LUT26+T comes with a fixed-sense threshold voltage of 2.63V, which is ideal for 3V-operated systems. This precise voltage monitoring helps safeguard system integrity by preventing erratic operation during power-up, power-down, and brown-out conditions.

One of the key features of this supervisory circuit is its low power consumption, making it suitable for battery-operated devices where power efficiency is critical. Its quiescent current is typically only 1.5µA, which contributes to the extension of battery life in portable applications.

The MAX6364LUT26+T offers several other features that enhance its functionality. It has a manual reset input that allows for a system reset to be triggered with an external button or signal. Additionally, it provides a 140ms minimum power-on reset timeout period, which gives the system adequate time to stabilize before the µP begins operation. The device is also equipped with a watchdog timer that forces the µP into a reset state if the µP fails to provide a periodic signal, indicating that the system may have become unresponsive or is malfunctioning.

This supervisory circuit is available in a small, 6-pin SOT23 package, allowing for a compact footprint on PCBs. Its extended temperature range of -40°C to +125°C ensures that it can operate reliably in various environmental conditions. The MAX6364LUT26+T is also RoHS compliant, adhering to environmental regulations and making it suitable for use in a wide range of applications including computing systems, controllers, and portable devices.

Overall, the Maxim Integrated MAX6364LUT26+T supervisory circuit is a robust solution for maintaining the integrity of microprocessor systems by monitoring supply voltages and providing crucial system reset functionalities.