Maxim Integrated MAX6315US26D3+ Low-Power Microprocessor Reset Circuit

The MAX6315US26D3+ is a compact, highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications by ensuring that the µP resets properly during a power failure or whenever the voltage supplied to the µP falls below a safe threshold.

This device is specifically designed to maintain system integrity by monitoring the supply voltage and initiating a reset if it detects a voltage drop below a preset threshold, 2.63V for this particular model. The reset output remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold, ensuring the µP has adequate time to stabilize and start up correctly once power is restored.

The MAX6315US26D3+ is characterized by its low power consumption, consuming only 1µA of supply current, making it an ideal choice for portable and battery-operated equipment. The device comes in a compact SOT-143 package, allowing for space-saving in PCB design and is fully specified over the temperature range of -40°C to +85°C, ensuring reliable operation in a wide range of environments.

Key features of the MAX6315US26D3+ include:

• Precision factory-set V_CC reset thresholds
• 140ms (min) reset pulse width
• Low 1µA supply current
• Immune to short V_CC transients
• Wide operating temperature range
• Compact SOT-143 package

This reset circuit is an essential component for systems that cannot afford to compromise on data integrity or operational reliability. Applications range from computers and controllers to portable and automotive electronics, where maintaining a proper reset sequence is critical to system functionality.

By integrating the MAX6315US26D3+ into your design, you can ensure that your system will respond appropriately to power disturbances, thus safeguarding your application against data corruption, erratic operation, and potential damage.