Maxim Integrated's MAX6383XR42D1-T Microprocessor Reset Circuit

The MAX6383XR42D1-T is a highly reliable and precise microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. This component ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The device is particularly suitable for use in portable, battery-powered equipment due to its low power consumption and compact size.

Featuring a factory-set reset threshold voltage of 4.2V, the MAX6383XR42D1-T provides a robust solution for systems that operate with 5V power supplies or require a higher reset threshold. The device generates a reset signal when the VCC supply voltage falls below the preset threshold, ensuring that the microprocessor and other critical system components are reset properly.

The reset output from the MAX6383XR42D1-T is active low and remains asserted for a minimum reset timeout period after VCC has risen above the reset threshold. This timeout period is designed to give the system sufficient time to stabilize before the processor starts operation. The device is available in a small, 3-pin SC70 package, which is ideal for space-constrained applications.

Key features of the MAX6383XR42D1-T include:

• Factory-set reset threshold voltage of 4.2V
• Low supply current, making it suitable for battery-operated devices
• Guaranteed reset valid to VCC = 1V
• Minimum 140ms reset timeout period
• Immunity to short VCC transients
• Operational temperature range from -40°C to +125°C
• Available in a tiny, 3-pin SC70 package

With its precision voltage monitoring and low power consumption, the MAX6383XR42D1-T is an excellent choice for managing microprocessor reset functions in a wide range of applications including computers, controllers, intelligent instruments, and portable consumer electronics. Maxim Integrated's commitment to quality ensures that this reset circuit will provide reliable operation, helping to maintain the integrity and performance of your electronic systems.