The MAX822TUS+T from Maxim Integrated is a compact, low-power voltage monitor designed to ensure the stability and reliability of your electronic systems. This device is part of a family of microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered circuits.

These voltage monitors come in a tiny SC70/SOT23-3 package, making them an ideal choice for space-constrained applications. The MAX822TUS+T offers a precise factory-set voltage threshold of 2.93V, which is perfect for monitoring 3.3V power supplies. It provides a reset signal to the host microprocessor during power-up, power-down, and brown-out conditions, ensuring that the µP starts up in a known state every time.

The device features a low supply current of only 3µA, which is beneficial for battery-operated equipment. Its reset output is guaranteed to be in the correct state for VCC down to 1V, and the device can operate over a wide temperature range of -40°C to +125°C, making it suitable for various industrial and automotive applications.

The MAX822TUS+T also includes a manual reset feature, allowing a pushbutton to be connected for manual system resets. The reset output stage is push-pull, which eliminates the need for an external pull-up resistor and further simplifies the design. Additionally, the device's reset timeout period is 140ms min, providing a reliable reset signal duration.

Overall, the Maxim Integrated MAX822TUS+T voltage monitor is a robust solution for system monitoring, offering high accuracy, low power consumption, and ease of use. Its compact form factor and wide operating temperature range make it a versatile choice for monitoring power supplies in various electronic systems, from portable devices to automotive and industrial controls.