ON Semiconductor MAX708TCUA-T Microprocessor Supervisory Circuit

The ON Semiconductor MAX708TCUA-T is a compact, highly reliable microprocessor (μP) supervisory circuit designed to monitor power supplies in μP and digital systems. It provides a significant level of protection to ensure that the system operates correctly even during power failures or unexpected events.

This supervisory circuit is ideal for managing power-on reset functionality. It ensures that the μP boots up in an orderly manner by maintaining the reset output in the active condition until the system voltage has stabilized and reached an acceptable level for reliable operation. The reset signal is kept active for a minimum of 140ms after VCC has risen above the reset voltage threshold, providing ample time for the system to stabilize.

The MAX708TCUA-T offers a variety of features that make it a versatile choice for system designers. One of its key features is the ability to monitor the system voltage and provide a reset signal to the μP whenever it detects an out-of-tolerance condition. This helps to prevent system errors and data corruption that could occur due to low voltage levels.

The device comes in a small 8-pin μMAX package, making it suitable for space-constrained applications. It operates over a wide voltage range and has a low supply current, which makes it energy efficient and suitable for battery-powered devices. The MAX708TCUA-T is also fully specified over the temperature range of -40°C to +85°C, ensuring reliable operation in a variety of environments.

Additional features of the MAX708TCUA-T include a manual reset input, which allows for an external trigger to initiate a system reset. This can be useful for debugging or when a manual system restart is required. Furthermore, the device has a debounced TTL/CMOS-compatible manual-reset input, which enhances its versatility and integration with various logic systems.

In summary, the ON Semiconductor MAX708TCUA-T provides a robust and reliable solution for system monitoring and reset management, making it an excellent choice for ensuring the stability and integrity of microprocessor-based systems.