Maxim Integrated MAX708TESA+ Microprocessor Supervisory Circuit

The MAX708TESA+ from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant layer of protection by ensuring that the µP boots up in a predictable and controlled manner, even after power failures or during power-up sequences. This component is essential for applications requiring high reliability and consistent operation.

With its compact 8-pin SOIC package, the MAX708TESA+ offers a range of features that make it an ideal solution for system management. One of its key functions is to assert a reset signal to the µP during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1.2V, ensuring that the µP resets properly even under low voltage conditions.

The device also includes a manual reset feature, allowing designers to incorporate a push-button reset option. This feature is useful for service personnel or system users to initiate a system reset without cycling the power.

The MAX708TESA+ has a preset threshold voltage of 4.65V, which is suitable for monitoring 5V power supplies. The reset signal is guaranteed to remain asserted for a minimum of 140ms after VCC rises above the reset threshold level. This timeout ensures that the system has adequate time to stabilize before the µP begins operation.

Another advantage of the MAX708TESA+ is its low power consumption, with a typical supply current of only 12µA, making it suitable for power-sensitive applications. It also features an active-low reset output, which is compatible with most µP and logic systems.

Overall, the MAX708TESA+ from Maxim Integrated is a robust and versatile supervisory circuit that provides crucial system protection with minimal power draw. It's an excellent choice for designers looking to enhance the reliability of their digital systems, particularly in applications where consistent and predictable µP behavior is critical.

For further information and full specifications, designers and engineers should consult the datasheet and technical documentation available from Maxim Integrated.