Maxim Integrated's MAX6735KAZID3+T Microprocessor Supervisory Circuit

The MAX6735KAZID3+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 3V power supply.

This supervisory circuit ensures that the µP starts up in a known state by providing a reset signal to the µP during power-up, power-down, and brown-out conditions. The reset signal remains asserted until the supply voltage reaches a stable condition and maintains it for a minimum timeout period after V_CC becomes valid. This ensures that the µP resets cleanly during power-up.

The MAX6735KAZID3+T features a factory-trimmed reset threshold, which is suitable for operation with a wide variety of CPU and logic ICs. This threshold accuracy and an extended operating temperature range make it ideal for a broad range of applications in consumer, industrial, and automotive markets.

Additionally, the device includes a manual reset input that allows the user to trigger a reset with an external signal, providing an extra layer of system control. It also offers a watchdog timer that monitors the system's operation and asserts a reset if the µP does not provide a periodic signal, indicating that the system is functioning correctly.

The MAX6735KAZID3+T is available in a small, 5-pin SOT-23 package, which is suitable for space-constrained applications. This device is also fully specified over the -40°C to +125°C extended temperature range, catering to environments that require robust performance.

With its combination of features, the Maxim Integrated MAX6735KAZID3+T supervisory circuit is an essential component for systems requiring reliable operation and an additional layer of protection for microprocessors. Designers can trust this device to enhance system integrity and prevent costly errors due to power instability or processor malfunctions.