MAX6347UR46-T Microprocessor Reset Circuit

The MAX6347UR46-T from Maxim Integrated is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant level of system integrity by asserting a reset signal to the host microprocessor during power-up, power-down, or brownout conditions, ensuring that the µP starts in a known state.

Key Features

• Precision Monitoring: This device features a precision factory-set V<sub>CC reset threshold voltage of 4.6V, ensuring accurate monitoring of the system voltage.
• Low Power Consumption: With its low supply current of 1.2µA, the MAX6347UR46-T is an energy-efficient solution for battery-powered applications.
• Manual Reset Input: It includes a manual reset input that allows for a system reset to be initiated with an external switch or logic signal.
• Reset Timeout: The reset output remains asserted for a minimum timeout period of 140ms after V<sub>CC has risen above the reset threshold, providing ample time for the system to stabilize.
• Compact SOT23 Packaging: The device is available in a small, 3-pin SOT23 package, making it suitable for space-constrained applications.

Applications

The MAX6347UR46-T is ideal for use in a variety of applications where reliable system operation is critical. It is commonly used in:

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

Product Summary

The Maxim Integrated MAX6347UR46-T is a robust reset circuit that ensures the safe operation of microprocessors by providing a reset signal during power-up, power-down, and brownout conditions. Its precision threshold monitoring, low power consumption, and compact packaging make it an excellent choice for maintaining system integrity across various applications.