Maxim Integrated's MAX810MEUR-T: Reliable Microprocessor Reset Circuit

The MAX810MEUR-T from Maxim Integrated is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant level of system reliability through its ability to assert a reset signal whenever the VCC supply voltage drops below a preset threshold, ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions.

This device is particularly well-suited for portable, battery-operated applications due to its low power consumption and small footprint. The MAX810MEUR-T comes in a 3-pin SOT-23 package, which is ideal for space-constrained applications. Its precision voltage monitoring feature safeguards sensitive microprocessor systems against unpredictable events such as sudden dips in power supply levels, which could lead to system errors or data corruption.

One of the key features of the MAX810MEUR-T is its ability to provide a reset signal for a minimum of 140ms (typical) after VCC has risen above the reset threshold level. This ensures that the system has sufficient time to stabilize before the processor starts to execute code. Additionally, the device has an extremely low supply current of 17µA (typical), which is beneficial for prolonging battery life in portable applications.

The reset output from the MAX810MEUR-T is active-low and is guaranteed to be in the correct state for VCC down to 1V. This allows the device to be used in systems with low operating voltages. Furthermore, the MAX810MEUR-T is designed to ignore fast transients on the VCC line, which prevents false resets from occurring due to line noise or other temporary glitches.

Maxim Integrated has ensured that the MAX810MEUR-T is highly reliable and operates over a wide temperature range of -40°C to +85°C, making it suitable for industrial as well as consumer applications. Whether you are designing a complex digital system or a simple microcontroller-based project, the MAX810MEUR-T provides a simple and effective solution to protect your system from power supply uncertainties.

In conclusion, the MAX810MEUR-T from Maxim Integrated is a robust and reliable choice for system designers looking to enhance the operational stability of their digital systems through effective power monitoring and reset capabilities.