Product Overview: NXP MAX809T Microprocessor Reset Circuit

The NXP MAX809T is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial function by ensuring that the µP and its associated circuitry reset cleanly during power-up, power-down, and brown-out conditions. The MAX809T is an essential component for systems that require a high level of reliability and precision in operation.

Key Features

• Precision Monitoring: The device features a precision voltage sensor capable of monitoring the system's power supply. This ensures that the µP is only operational when the supply voltage is within an acceptable range.
• Power-On Reset: Upon application of power, the MAX809T generates a reset signal to ensure the µP starts in a known state. The reset signal is maintained for a minimum of 140ms after the supply voltage reaches the reset voltage threshold, providing ample time for the system to stabilize.
• Manual Reset Input: An additional feature of the MAX809T is the manual reset input, which allows for an external signal to initiate a system reset. This is particularly useful for system maintenance or emergency situations.
• Low Power Consumption: Designed for power-sensitive applications, the device operates with a low supply current draw, making it suitable for battery-operated equipment.
• Temperature Range: The MAX809T is operational over a wide temperature range, ensuring reliable performance in various environments.

Applications

The NXP MAX809T is versatile and can be used in a multitude of applications, including:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Industrial Controllers
• Intelligent Instruments

Package and Availability

The device is available in a small SOT-23 package, which is ideal for space-constrained applications. The MAX809T is also available in different voltage threshold options to accommodate various system requirements. Its industry-standard footprint ensures ease of integration into existing designs without the need for significant layout changes.

With its robust feature set and reliable performance, the NXP MAX809T is an excellent choice for ensuring system stability and integrity across a broad range of electronic applications.