Maxim Integrated's MAX706CUA+T - Microprocessor Supervisory Circuit

The MAX706CUA+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 conjunction with +5V-powered circuits.

This supervisory circuit offers several essential features that ensure system stability. It provides a precision voltage monitor for power-fail or low-battery warning, and it guarantees a power-on reset to the µP for a minimum of 140ms after power-up. The MAX706CUA+T includes a manual reset input that allows for a very low supply current of 17µA, making it an energy-efficient choice for portable and power-sensitive applications.

The device comes in an 8-pin µMAX package, which is suitable for space-constrained applications. The MAX706CUA+T operates over a wide temperature range, from -40°C to +85°C, ensuring reliable performance in diverse operating conditions. It also includes a debounced manual reset input, which allows for a straightforward and reliable way to initiate a system reset manually.

Key features of the MAX706CUA+T include:

• Precision monitoring of +5V power supplies
• 140ms min power-on reset pulse width
• Manual reset input with debounce
• Low 17µA supply current
• 200ms min reset pulse width on power-up for MAX706R/S/T
• Active-high and active-low reset outputs
• 8-pin µMAX package
• Temperature range from -40°C to +85°C

Applications for the MAX706CUA+T include computers, controllers, intelligent instruments, critical µP and µC power monitoring, and portable/battery-powered equipment. With its ability to enhance system reliability without the need for external components, this supervisory circuit is an excellent choice for designers looking to improve the safety and robustness of their digital systems.

Overall, Maxim Integrated's MAX706CUA+T offers a compact, efficient, and cost-effective solution for power monitoring and µP system stability, making it a valuable component in a wide range of electronic products.