Maxim Integrated MAX6315US29D2 Low-Power Microprocessor Reset Circuit

The MAX6315US29D2 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 through its ability to reset a µP during power-up, power-down, and brown-out conditions. With its small size and low power consumption, the MAX6315US29D2 is an excellent choice for portable and space-constrained applications.

This device features a preset factory-trimmed reset threshold voltage of 2.925V, which makes it suitable for monitoring 3.3V power supplies and ensuring that the µP resets properly during a power fault. The reset output remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold level, providing ample time for the µP to stabilize.

The MAX6315US29D2 comes in a highly compact SOT-143 package, which is ideal for applications where space is at a premium. Despite its small footprint, it does not compromise on performance. It offers a low supply current of only 1µA, which is beneficial for battery-powered devices, as it helps to extend battery life.

One of the key features of the MAX6315 is its immunity to short V_CC transients, ensuring that the device does not generate false resets during momentary drops in the power supply. This makes the device particularly useful in environments where power supply stability cannot always be guaranteed.

The MAX6315US29D2 also includes a debounced manual reset input. This allows the user to manually trigger a reset, which can be useful during system maintenance or when implementing a user-initiated system restart without cycling the power.

Overall, the Maxim Integrated MAX6315US29D2 is a robust, easy-to-use reset circuit that offers excellent power supply monitoring capabilities for microprocessors. Its combination of low power, small size, and high reliability makes it an ideal choice for a wide range of applications, including portable devices, computers, embedded systems, and other digital equipment that requires high system uptime and stability.