The MAX809JEUR is a compact, highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant degree of precision and integration, ensuring systems remain operational within their voltage thresholds. This device is particularly suitable for use in portable, battery-powered equipment due to its low power consumption and small footprint.

Key Features

• Reset Output: The MAX809JEUR provides a reset signal to the µP during power-up, power-down, and brown-out conditions, ensuring that the µP starts in a known state.
• Voltage Monitoring: The device monitors the system voltage and keeps the reset output active as long as the system voltage remains below a preset threshold.
• Low Power Consumption: With its low supply current draw (typically 20µA), it is an excellent choice for power-sensitive applications.
• Manual Reset Feature: It includes a manual reset input that allows the user to initiate a reset, providing additional system control.
• High Threshold Accuracy: The device features a ±2% reset threshold accuracy over the entire temperature range, ensuring reliable operation.
• Immunity to Short Vcc Transients: The MAX809JEUR is designed to ignore short-duration transients on the Vcc line, minimizing false resets.

Applications

This supervisory circuit is ideal for a range of applications, including:

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

Package and Availability

The MAX809JEUR is available in a small, SOT-23 package, making it convenient for use in space-constrained applications. Maxim Integrated's commitment to quality ensures that the MAX809JEUR meets the stringent requirements for industrial-grade components, providing reliable performance in a variety of operating conditions.