Maxim Integrated MAX6315US46D3+T Low-Power Microprocessor Reset Circuit

The MAX6315US46D3+T is a compact, highly-reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 4.6V power supply voltage.

One of the key features of the MAX6315US46D3+T is its ability to assert a reset signal whenever the VCC supply voltage declines below a preset threshold, ensuring that the µP boots up in a known state. The reset signal remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, thus providing a stable system reset. This timeout period, known as the reset timeout, is typically 140ms, which allows the power supply and processor to stabilize before the system starts to operate.

This device is particularly well-suited for battery-powered electronics, such as portable computing devices, handheld instruments, and consumer products, where power efficiency is crucial. The MAX6315US46D3+T features a low supply current of only 1µA, making it an ideal choice for power-sensitive applications.

The MAX6315US46D3+T comes in a space-saving SOT-143 package, which is beneficial for designs where board space is at a premium. Additionally, the device is specified for the extended industrial temperature range of -40°C to +85°C, ensuring reliable operation under varying environmental conditions.

With its built-in glitch immunity, the MAX6315US46D3+T is resistant to short duration pulses on the VCC line, which is a common issue in digital systems and can lead to false resets. This feature helps to maintain system stability and prevents unnecessary resets that could disrupt the normal operation of the application.

Overall, the Maxim Integrated MAX6315US46D3+T is an excellent choice for designers looking for a simple, cost-effective solution to protect their digital systems from the perils of undervoltage conditions, ensuring a stable and reliable operation.