Maxim Integrated MAX706ASESA+T - Supervisory Circuit

The Maxim Integrated MAX706ASESA+T supervisory circuit is a compact, low-power component designed for monitoring power supplies in microprocessor (µP) systems, providing a crucial layer of protection and stability. This tiny powerhouse is housed in an 8-pin SOIC package, making it ideal for space-constrained applications where board real estate is at a premium.

The MAX706ASESA+T supervisory circuit offers a range of features that make it an essential part of any robust µP system. It provides a 4.65V threshold voltage, ensuring precise monitoring of the power supply to keep the µP and other critical components operating within safe parameters. This device includes a manual reset input, allowing for an external trigger to initiate a system reset, offering additional control and safety to system designers.

One of the key benefits of this supervisory circuit is its ability to assert a reset signal whenever the VCC supply voltage declines below the preset threshold. The reset output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold, ensuring a proper system reset and stable operation. This feature is particularly useful in preventing system errors and data corruption that may occur during power-up, power-down, or brown-out conditions.

The MAX706ASESA+T also includes a watchdog timer that can be disabled if not needed, providing flexibility in application. The watchdog timer monitors the microprocessor activity and initiates a system reset if the microprocessor fails to provide a periodic signal within a preset timeframe, indicating a system malfunction.

This supervisory circuit operates over a wide temperature range of -40°C to +85°C, making it suitable for various industrial and commercial environments. With its low supply current of only 12µA, the MAX706ASESA+T is an energy-efficient solution for power supply monitoring, contributing to the overall energy savings and longevity of the system it protects.

In summary, the Maxim Integrated MAX706ASESA+T is a reliable and versatile supervisory circuit that offers vital protection features for microprocessor systems, ensuring stable operation and system integrity across a wide range of applications.