Maxim Integrated MAX6747KA16+T Microprocessor Supervisory Circuit

The Maxim Integrated MAX6747KA16+T is a highly efficient, compact 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 in systems that require voltage monitoring. This supervisory circuit is particularly suitable for portable and space-constrained applications due to its small form factor.

One of the key features of the MAX6747KA16+T is its ability to assert a reset signal whenever the VCC supply voltage falls below a preset threshold, ensuring that the µP boots up in a known state. The reset signal remains asserted for a minimum timeout period after VCC has risen above the reset threshold, providing ample time for the system to stabilize.

The device offers a factory-trimmed reset threshold voltage of 1.600V, tailored for applications that operate at lower supply voltages. The MAX6747KA16+T operates over a wide supply voltage range from 1.1V to 5.5V, making it versatile for various digital systems. Its low supply current of 7.5µA (typical) is ideal for battery-powered equipment, contributing to extended battery life.

Additional features of this supervisory circuit include a manual reset input, allowing for a system reset to be triggered with an external signal. This is particularly useful for debugging or when a user-initiated reset is required. The MAX6747KA16+T also provides a debounced manual reset input, which ensures that only clean reset signals are processed, thereby preventing false triggering due to noise or contact bounce.

The device comes in a space-saving 8-pin SOT23 package, which is highly advantageous for designs with limited PCB real estate. Moreover, its extended temperature range from -40°C to +125°C allows for operation in extreme environments, which is critical for industrial and automotive applications.

Overall, the Maxim Integrated MAX6747KA16+T is an excellent choice for system designers looking for a reliable and easy-to-implement supervisory solution that ensures stable operation and enhances system integrity.