Maxim Integrated MAX716EPI Product Overview

The Maxim Integrated MAX716EPI is a high-performance, CMOS microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring 5V power supplies. The MAX716EPI is ideal for use in a wide range of applications including computers, controllers, intelligent instruments, and critical µP power monitoring.

This device performs a variety of functions necessary for ensuring the stable operation of digital systems. It provides a precision voltage monitor with a factory-trimmed reset threshold of 4.65V. The reset output is guaranteed to remain in the logic-low state for VCC down to 1.0V, ensuring that the µP starts in a known state. Additionally, the MAX716EPI features a debounced manual reset input that allows for a manual override, triggering a system reset when necessary.

The MAX716EPI offers a reset delay time of 200ms, which prevents unwanted resets due to transient glitches in the power supply. This delay ensures that the system has adequate time to stabilize before the processor begins operation. The device is also equipped with a watchdog timer that forces the reset to become active if the watchdog input has not been toggled within a preset timeout period, which is useful in situations where a µP might become locked up due to a software error.

Encased in a robust 8-pin DIP package, the MAX716EPI is designed to operate over a wide temperature range of -40°C to +85°C, making it suitable for industrial environments. Its low supply current of 15µA (typical) is an added advantage for power-conscious designs. For systems requiring different reset threshold voltages, Maxim Integrated offers a comprehensive range of similar supervisory circuits to suit various applications.

Overall, the MAX716EPI is a versatile and reliable solution for system monitoring, providing essential protection against power supply anomalies and ensuring the proper operation of microprocessor-based systems.