Maxim Integrated MAX812LEUS Microprocessor (µP) Supervisory Circuit

The MAX812LEUS from Maxim Integrated is a compact, highly integrated 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 conjunction with 5V-powered circuits.

This supervisory circuit features a precision voltage monitor with a preset 4.63V threshold, ensuring that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The reset output is guaranteed to remain in the active state for a minimum of 140ms after VCC has risen above the reset threshold level, providing ample time for the µP to stabilize.

The MAX812LEUS comes in a compact 4-pin SOT-143 package, making it a space-saving solution for applications where board space is at a premium. It is ideal for use in computers, controllers, intelligent instruments, critical µP and µC power monitoring, and portable/battery-powered equipment.

Key features of the MAX812LEUS include:

• Precision Monitoring: Accurate tracking of the 5V system power supply with a preset threshold.
• Power-On Reset: Ensures that the µP starts in a known state by providing a reset signal during power-up.
• Manual Reset: A manual reset input allows the reset to be triggered with an external switch or logic signal.
• Low Power Consumption: Designed for energy-efficient operation to extend the life of battery-powered devices.
• Temperature Range: Operates over the extended industrial temperature range (-40°C to +85°C), making it suitable for harsh environments.

By integrating the MAX812LEUS into your design, you can enhance system reliability through its reset and monitoring functions. Maxim Integrated's commitment to quality ensures that the MAX812LEUS supervisory circuit is a dependable component for maintaining the integrity of your digital systems.