Maxim Integrated MAX6383XR42D1 Microprocessor Reset Circuit

The Maxim Integrated MAX6383XR42D1 is a compact, high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 4.2V power supply voltage.

This device is engineered to maintain system integrity by monitoring the VCC power supply and asserting a reset signal whenever the VCC supply voltage falls below the factory-set reset threshold of 4.2V. The reset output remains asserted for a minimum reset timeout period after VCC has risen above the reset threshold, ensuring that the µP is held in reset for a sufficient amount of time to allow for a stable system restart. The reset timeout period for the MAX6383XR42D1 is typically 280ms, which provides ample time for the system to recover from a brownout or power-down event.

Featuring a low supply current of only 1.2µA, the MAX6383XR42D1 is ideal for portable and battery-powered applications where power conservation is critical. The device is available in a small, 3-pin SC70 package, making it suitable for space-constrained applications such as handheld devices, notebooks, and other portable electronics.

The MAX6383XR42D1 also includes additional features such as a debounced manual reset input which allows for a forced reset, making it easy for users to reboot the system without cycling the power. This feature can be particularly useful during system development and debugging.

Key features of the MAX6383XR42D1 include:

• Factory-set reset threshold voltage: 4.2V
• Minimum reset timeout period: 280ms
• Low supply current: 1.2µA
• Small 3-pin SC70 package
• Manual reset input
• Immune to short VCC transients

With its precision monitoring capabilities and low power consumption, the Maxim Integrated MAX6383XR42D1 is a reliable solution for maintaining system stability in a variety of digital applications.