Maxim Integrated MAX6315US26D4-T Microprocessor Reset Circuit

The MAX6315US26D4-T is a compact, highly-reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant function by ensuring that the µP and its peripherals are reset properly during power-up, power-down, or brown-out conditions. This component is an essential building block for any system that requires a stable and dependable reset function to maintain operational integrity.

One of the key features of the MAX6315US26D4-T is its ability to assert a reset signal whenever the V<sub>CC supply voltage declines below a preset threshold, maintaining it until the supply voltage recovers above that threshold. The reset output remains asserted for a period of at least 140ms after V<sub>CC has risen above the reset threshold level, ensuring that the system has sufficient time to stabilize.

The device operates with a supply voltage of 2.5V to 5.5V, making it suitable for a wide range of applications, including portable devices, computers, controllers, and intelligent instruments. The MAX6315US26D4-T is preset with a factory-trimmed reset threshold voltage of 2.63V, which is tailored for 2.7V-operating systems.

Another advantage of this supervisory circuit is its low supply current of only 1.5µA, which contributes to the energy efficiency of the overall system. This is particularly beneficial for battery-powered devices where power conservation is critical.

The MAX6315US26D4-T comes in a compact SOT-143 package, making it easy to integrate into space-constrained designs. It is also available in a variety of other standard packages, providing flexibility for different PCB layouts. Additionally, the device features an active-low push-pull reset output, which allows for a direct interface with other logic components without the need for external pull-up resistors.

In conclusion, the Maxim Integrated MAX6315US26D4-T is a robust and reliable solution for microprocessor monitoring, offering precision power supply monitoring, low power consumption, and a small form factor, making it an excellent choice for a multitude of electronic applications.