Maxim Integrated MAX819LCPA Microprocessor Supervisory Circuit

The MAX819LCPA from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor the power supplies in µP and digital systems. It provides a significant level of protection for your digital circuits by ensuring that the power supply levels are stable and within acceptable limits. The device is ideal for use in a wide range of applications, including computers, controllers, and intelligent instruments, where precise power supply monitoring is critical.

This supervisory circuit offers a combination of features that enhance the safety and robustness of system operation. One of the key features is the ability to assert a reset signal to the µP whenever the VCC supply voltage falls below the preset threshold. The reset signal remains asserted for a period after VCC has risen above the reset threshold, ensuring that the µP and associated circuitry have sufficient time to stabilize. This timeout period is typically 240ms, which helps prevent system errors during power-up, power-down, or brown-out conditions.

The MAX819LCPA also includes a manual reset feature, which allows the system to be reset by an external signal, providing an additional layer of control. This can be particularly useful during system maintenance or troubleshooting, allowing for a manual system restart without the need to cycle power.

Another advantage of this device is its low supply current, which makes it suitable for use in portable and battery-powered applications. The MAX819LCPA operates over a wide voltage range, from 1.1V to 5.5V, providing versatility for different system designs and ensuring compatibility with various µP logic levels.

The circuit is offered in an 8-pin DIP package, making it easy to integrate into your system with minimal footprint. Its temperature range of -40°C to +85°C guarantees reliable operation in a broad spectrum of environmental conditions.

Overall, the Maxim Integrated MAX819LCPA supervisory circuit is a compact, efficient, and reliable solution for managing µP system power supplies, ensuring that your digital systems operate without interruption and with the highest level of data integrity.