Maxim Integrated MAX6414UK175 Microprocessor Reset Circuit

The Maxim Integrated MAX6414UK175 is a highly reliable and compact microprocessor (μP) supervisory circuit designed to monitor power supplies in digital systems. It provides a critical function by ensuring that the microprocessor and associated digital systems reset to a known state during power-up, power-down, or if a brownout condition occurs. This ensures the system operates reliably without manual intervention.

The MAX6414UK175 comes in a small SOT23-5 package, making it an ideal choice for space-constrained applications. It features a factory-trimmed reset threshold voltage of 1.75V, which makes it suitable for low-voltage operation in portable devices, consumer electronics, and embedded systems. The device's active-low reset output remains asserted for a minimum of 140ms (typical) after VCC has risen above the reset threshold, providing sufficient time for the system to stabilize.

Key features of the MAX6414UK175 include:

• Low Supply Current: With a typical supply current of only 1.5μA, the MAX6414UK175 is highly efficient, making it ideal for battery-powered applications where power conservation is crucial.
• Manual Reset Input: A manual reset input allows for an external trigger to initiate a system reset, providing additional system control and diagnostic capabilities.
• Debounced Manual Reset Input: The manual reset input is internally debounced, ensuring that spurious noise does not cause unintended resets.
• Immune to Short VCC Transients: The device is designed to ignore short-duration transients on the VCC line, preventing false resets and improving system reliability.
• Wide Operating Temperature Range: The MAX6414UK175 operates over an extended temperature range of -40°C to +125°C, making it suitable for industrial and automotive environments.

Applications for the MAX6414UK175 are diverse and include portable devices, computers, controllers, intelligent instruments, and critical microcontroller power monitoring. Its combination of low power consumption, compact size, and robust feature set ensures that it is a go-to solution for designers looking to enhance system reliability through effective power supply monitoring.

For more information and to view detailed specifications, designers and engineers can refer to the Maxim Integrated datasheet for the MAX6414UK175.