Maxim Integrated MAX810ZEXR-T Microprocessor Reset Circuit

The MAX810ZEXR-T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant level of protection to your microprocessor by ensuring that it resets properly during power-up, power-down, and brown-out conditions. This compact and efficient device is an essential component for maintaining the integrity of system logic and preventing the corruption of data.

Enclosed in a small 3-pin SC70 package, the MAX810ZEXR-T is optimized for space-constrained applications. Its tiny footprint makes it an ideal choice for portable devices where board space is at a premium. Despite its small size, it is robust in its functionality, offering a precise factory-trimmed threshold voltage that ensures accurate monitoring of the system voltage.

The device operates with a supply voltage range from 1.2V to 5.5V, making it versatile for a variety of low-voltage applications including PDAs, laptops, and other battery-powered devices. The MAX810ZEXR-T features a low power consumption, which is critical for extending battery life in portable applications.

One of the key features of the MAX810ZEXR-T is its active-low RESET output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level. This provides a proper reset signal to the µP, ensuring that it starts up in a known state every time. It also has the capability to assert a reset signal whenever the supply voltage drops below the preset threshold, protecting the system from unpredictable behavior due to undervoltage conditions.

With its built-in thermal overload protection, the MAX810ZEXR-T ensures reliable operation over the entire temperature range of -40°C to +125°C. This makes it suitable for use in harsh environments and industrial applications where temperature extremes are common.

In summary, the Maxim Integrated MAX810ZEXR-T is a compact, efficient, and reliable solution for microprocessor system monitoring, providing essential protection against power supply anomalies and ensuring stable system operation.