Maxim Integrated MAX6320PUK29CY+T Microprocessor Supervisory Circuit

The MAX6320PUK29CY+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to maintain system integrity during power failures or unexpected conditions in digital systems. This precision device is ideal for monitoring 3V, 3.3V, and 5V power-supply voltages, ensuring that your microprocessor and other critical system components are operating under optimal conditions.

With its compact SOT-23 package, the MAX6320PUK29CY+T is a space-saving solution for a variety of applications, including computers, controllers, intelligent instruments, and portable/battery-powered electronics. The device features a factory-trimmed reset threshold voltage, specifically set for 2.925V operation, which provides a precise monitoring capability for systems that require a well-defined reset threshold.

One of the key features of this supervisory circuit is its reset timeout period. The MAX6320PUK29CY+T offers a fixed timeout period of 140ms (min), ensuring that the µP has sufficient time to initialize and stabilize before resuming normal operation. This timeout delay helps prevent the system from restarting prematurely during brief power glitches or brownout conditions.

The device also includes a manual reset input, allowing for an external trigger to initiate a system reset. This feature is particularly useful for system maintenance or when a controlled system restart is needed without cycling the power supply.

For added versatility, the MAX6320PUK29CY+T includes an active-low reset output. This open-drain output provides a strong pull-down during reset events, ensuring a clear and assertive signal to the µP or other system components. The reset signal remains asserted until the monitored voltage has stabilized above the reset threshold and the timeout period has elapsed, guaranteeing a safe and orderly system restart.

Maxim Integrated's commitment to quality and reliability is evident in the MAX6320PUK29CY+T, which is designed to operate over the extended temperature range of -40°C to +85°C. With its precision voltage monitoring and robust feature set, this supervisory circuit is an excellent choice for safeguarding your critical systems against power supply uncertainties.