Product Overview: MAX6805US44D3+T from Maxim Integrated

The MAX6805US44D3+T is a robust, low-power microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems that require voltage monitoring.

This supervisory circuit is particularly adept at maintaining system integrity through monitoring its power supply. It ensures that the microprocessor is reset to a known state during power-up, power-down, and brownout conditions. The MAX6805 comes in a compact SOT-143 package and is characterized for operation over a wide temperature range, making it suitable for various applications including portable devices, computers, controllers, and intelligent instruments.

The device features a preset threshold voltage of 4.4V, tailored for systems that operate at 5V power supply levels. It has an active-low reset output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, providing sufficient time for the system to stabilize before the processor starts running. This reset timeout ensures reliable system reset operation without the need for external capacitors or resistors.

The MAX6805US44D3+T incorporates a debounced manual reset input, which allows for a manual system reset to be triggered with an external pushbutton. This feature enhances the flexibility and control for system designers and users, enabling manual reinitialization of the system whenever necessary.

Designed with the end-user in mind, the MAX6805 offers low supply current features, making it an energy-efficient choice for battery-operated applications. The device operates over a wide voltage range from 1.0V to 5.5V, which provides design flexibility for different system voltage levels. With its small footprint and high integration, the MAX6805US44D3+T is an excellent solution for systems that require reliable voltage monitoring with minimal additional components.

In summary, the Maxim Integrated MAX6805US44D3+T is a versatile, easy-to-use supervisory circuit that enhances system reliability with its built-in features, making it a valuable component for a wide range of electronic applications.