Maxim Integrated MAX708ESA Microprocessor Supervisory Circuit

The Maxim Integrated MAX708ESA is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in system monitoring applications.

Key Features

• Voltage Monitoring: The MAX708ESA ensures that the µP is held in reset until the system voltage has stabilized. It monitors the power supply voltage and keeps the microprocessor in reset mode for a minimum of 140ms after VCC has risen above the reset threshold level.
• Manual Reset Input: A manual reset input is provided to allow for a reset to be triggered with an external button or logic signal. This feature enhances the flexibility and control for system designers.
• Low Power Consumption: This device is designed for low power consumption, drawing only 40µA of supply current. It is ideal for power-sensitive applications.
• Reset Output Stages: The reset output is available in two configurations: push-pull or open-drain. The MAX708ESA provides an active-low reset signal.
• Wide Operating Voltage Range: It operates over a wide voltage range of 4.5V to 5.5V, making it suitable for a variety of digital systems.

Applications

The MAX708ESA is versatile and can be used in numerous applications, including:

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

Package and Reliability

The device is available in an 8-pin SOIC (Small Outline Integrated Circuit) package, which is suitable for surface-mount technology (SMT) and saves board space. The MAX708ESA's design is optimized for reliability, with a built-in watchdog timer and a guarantee to operate over the full temperature range of -40°C to +85°C.

In summary, the Maxim Integrated MAX708ESA offers a comprehensive solution for system monitoring with its ease of integration, minimal power consumption, and robust feature set, making it an essential component for safeguarding system integrity.