Maxim Integrated MAX6315US44D1 Low-Power Microprocessor Reset Circuit

The MAX6315US44D1 is a compact, highly reliable reset circuit device designed by Maxim Integrated to monitor power supplies in microprocessor systems, providing a significant layer of protection against low voltage and brown-out conditions. This precision circuit ensures that the microprocessor and associated digital systems reset to a known state during power failures or whenever the supply voltage drops below a predetermined threshold.

Key Features

• Supply Voltage Monitoring: The MAX6315US44D1 actively monitors the supply voltage and asserts a reset signal to the microprocessor when the voltage falls below the factory-set reset threshold of 4.40V, ensuring stable operation during power-up, power-down, and brown-out conditions.
• Low Power Consumption: Designed with power efficiency in mind, this device consumes a typical supply current of only 1µA, making it ideal for battery-operated and portable applications.
• Manual Reset Input: An additional feature includes a debounced manual reset input that allows for a manual override, providing flexibility and control to the system designer.
• Reset Timeout: After the supply voltage returns to an acceptable level, the reset output remains asserted for a minimum reset timeout period of 140ms, ensuring the microprocessor has adequate time to stabilize.
• Precision Reset Threshold: The reset threshold accuracy is maintained over the entire temperature range, which is critical for reliable system operation.
• Immunity to Short VDD Transients: The device is designed to reject brief glitches on the VDD line, adding to its robustness in noisy environments.

Applications

The MAX6315US44D1 is versatile and can be used across a wide range of applications where reliable system reset functionality is required. It is particularly suitable for:

• Computers and Servers
• Embedded Systems
• Battery-Powered Equipment
• Industrial Controllers
• Portable Consumer Electronics

With its small footprint, the SOT-143 package allows the MAX6315US44D1 to be included in space-constrained designs without sacrificing performance or reliability. Maxim Integrated's commitment to high-quality and dependable components makes this reset circuit an excellent choice for safeguarding your critical microprocessor-based systems.