Maxim Integrated MAX819LCUA+ Microprocessor Supervisory Circuit

The Maxim Integrated MAX819LCUA+ is a highly integrated 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 with 5V-powered circuits.

This supervisory circuit offers several key features that make it an essential component for ensuring the proper operation of microprocessor-based systems. The MAX819LCUA+ includes a precision voltage monitor with a factory-set reset threshold of 4.65V, which helps to maintain accurate control over the power supply voltage. This is particularly important for systems that are sensitive to voltage variations and require a stable power supply for proper functioning.

In addition to the voltage monitoring capabilities, the MAX819LCUA+ features a manual reset input. This allows for a straightforward and immediate way to initiate a system reset, providing an extra layer of control for the user. The device also incorporates a reset output that remains asserted for a minimum of 140ms after the supply voltage exceeds the reset threshold. This ensures that the system has sufficient time to stabilize before the microprocessor starts to operate.

The MAX819LCUA+ is designed with a low supply current, making it an energy-efficient choice for battery-powered applications. The device is available in a compact 8-pin µMAX package, which is ideal for space-constrained applications. It is also fully specified over the extended industrial temperature range, ensuring reliable performance in a wide variety of operating conditions.

Overall, the Maxim Integrated MAX819LCUA+ is a versatile and reliable solution for microprocessor system management. Its combination of voltage monitoring, manual reset capability, and energy efficiency make it a valuable component for designers looking to enhance system reliability and performance in their digital applications.

With its robust feature set and compact design, the MAX819LCUA+ is well-suited for a range of applications, including computers, controllers, intelligent instruments, and critical µP power monitoring.