The MAX709ESA from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and precision with a minimum of external components, making it an ideal solution for a wide range of applications, including computers, controllers, and intelligent instruments.

Key Features

• Voltage Monitoring: This device offers precision monitoring of +5V, +3.3V, +3V, or adjustable voltage supplies to ensure that the system voltage remains within operational limits.
• Reset Output: It generates a reset signal whenever the VCC supply voltage declines below a preset threshold, maintaining it active until the supply voltage recovers and stabilizes. This reset signal ensures proper system reboot and prevents microprocessor malfunction.
• Manual Reset: A manual reset feature allows for a reset to be triggered with an external button or signal, providing an additional layer of control.
• Low Power Consumption: The MAX709ESA is optimized for low power consumption, making it suitable for power-sensitive applications.
• Compact Form Factor: The device comes in a small 8-pin SO package, allowing for efficient use of PCB space.

Applications

The MAX709ESA is versatile and can be employed in multiple applications where system integrity is crucial. Common uses include:

• Embedded systems
• Portable/battery-powered equipment
• Data storage systems
• Telecommunications equipment

Technical Specifications

• Supply Voltage Range: 1V to 5.5V
• Reset Threshold Options: Factory-trimmed for 4.65V, 4.40V, 3.08V, or 2.93V in the standard version, with an adjustable option available.
• Reset Timeout: 200ms, 140ms, or 1120ms minimum
• Operating Temperature: -40°C to +85°C
• Package: 8-Pin SO

With its robust feature set and Maxim Integrated's reputation for quality, the MAX709ESA is an excellent choice for system designers seeking to enhance the reliability and performance of their digital systems.