Maxim Integrated MAX6721UTVDD3-T Microprocessor Supervisory Circuits

The MAX6721UTVDD3-T from Maxim Integrated is a highly reliable 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 used in systems that require voltage monitoring.

This supervisory circuit is tailored to maintain system integrity by monitoring the power supply voltage levels. It ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6721UTVDD3-T asserts a reset signal whenever the VCC supply voltage falls below its reset threshold level. The reset output remains asserted for the reset timeout period after VCC rises above the reset threshold to ensure the system has stabilized before the processor starts to execute code.

Key features of the MAX6721UTVDD3-T include:

• Power-supply transient immunity, which prevents false resets from occurring due to short-duration transients on the VCC line.
• A low supply current of 1.6µA (typical), which is ideal for portable battery-operated equipment.
• Factory-trimmed reset threshold voltages that cater to a wide range of applications.
• Reset timeout periods that are available in standard increments to provide flexibility in choosing the appropriate delay for specific applications.
• Immunity to short VCC transients, ensuring reliable operation under unpredictable conditions.

The MAX6721UTVDD3-T comes in a small, 6-pin SOT-23 package, making it suitable for space-constrained applications. Its operating temperature range of -40°C to +85°C allows for deployment in environments with varying temperature conditions.

Overall, the MAX6721UTVDD3-T is an excellent choice for designers looking for a microprocessor supervisory circuit that offers precision monitoring of VCC without the need for external components. Its integration into a system helps to enhance the reliability and performance of microprocessor-based applications, from consumer electronics to industrial control systems.

With Maxim Integrated's reputation for quality and reliability, the MAX6721UTVDD3-T is a component that engineers can trust for their critical system monitoring needs.