Maxim Integrated MAX6315US26D4+T Low-Power Microprocessor Reset Circuits

The MAX6315US26D4+T is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. Manufactured by Maxim Integrated, this device ensures that the µP and its peripherals are reset properly during a power failure or whenever the supply voltage drops below a predetermined threshold, ensuring a safe and predictable system behavior.

With a factory-trimmed reset threshold voltage of 2.63V, the MAX6315US26D4+T is tailored for applications that operate at 2.7V to 3.3V. It provides a precise voltage monitoring solution, which is essential for systems requiring consistent and accurate reset functions. This device is particularly suitable for portable, battery-powered equipment where power conservation is critical.

The MAX6315 features an active-low reset output, with the reset signal being asserted when the V_CC supply voltage falls below the reset threshold. The reset output remains asserted for a minimum reset timeout period after V_CC rises above the reset threshold, ensuring the system has adequate time to stabilize before resuming operation. This timeout period is internally set to a minimum of 140ms, which provides a reliable reset signal without the need for external components.

One of the key advantages of the MAX6315US26D4+T is its low power consumption, drawing a quiescent current of only 1µA, which is ideal for power-sensitive applications. Moreover, the device is available in a compact 4-pin SOT-143 package, making it an excellent choice for space-constrained designs.

Additional features of the MAX6315US26D4+T include its ability to operate over a wide temperature range of -40°C to +85°C, making it suitable for use in various environmental conditions. Its robust design ensures high reliability, with an integrated debounce circuit that filters out spurious noise that can cause false resets.

In summary, the Maxim Integrated MAX6315US26D4+T is a purpose-built reset circuit that offers accurate monitoring, low power consumption, and a compact form factor, making it an essential component for maintaining the integrity of microprocessor systems.