Maxim Integrated MAX6704RKA+T Microprocessor Supervisory Circuit

The Maxim Integrated MAX6704RKA+T is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 1.8V to 5V. This supervisory circuit ensures that your microprocessor system functions optimally by providing several key features that safeguard the system's integrity.

One of the core functions of the MAX6704RKA+T is to assert a reset signal whenever the VCC supply voltage falls below its reset threshold level. The reset signal remains asserted for a preset timeout period after VCC has risen above the reset threshold, ensuring that the µP and associated circuits have stabilized. The reset comparator is designed to ignore fast transients on VCC, which is crucial for preventing false resets from occurring.

The MAX6704RKA+T comes in a compact SOT-23 package, which is ideal for space-constrained applications. Its small size does not compromise its performance, as it includes a debounced manual reset input. This manual reset feature allows for a very low supply current of 17µA, making it an energy-efficient choice for portable electronics. Furthermore, the device operates over a wide temperature range of -40°C to +125°C, providing reliable performance in various environmental conditions.

With its factory-set reset thresholds suitable for monitoring 1.8V, 2.5V, 3.3V, and 5V power supplies, the MAX6704RKA+T is versatile and can be used in various applications. It also offers an active-low reset output, which makes it compatible with most microprocessor systems. The device is available in a tape and reel format denoted by the "+T" suffix, which facilitates automated manufacturing processes.

In conclusion, the Maxim Integrated MAX6704RKA+T is an essential component for systems requiring robust power supply monitoring and microprocessor protection. Its ease of integration, combined with its high level of precision, makes it an excellent choice for designers looking to enhance system reliability without increasing complexity.