ON Semiconductor MAX810RTR Microprocessor Reset Circuit

The ON Semiconductor MAX810RTR is a compact, highly-reliable microprocessor (µP) supervisory circuit designed to maintain system integrity during power failures or unexpected events. This device is an essential component for any application requiring precise monitoring and control of the power supply and system health.

With its small 3-pin SOT-23 package, the MAX810RTR is perfect for space-constrained applications, offering a streamlined solution for system reset functions. This device is specifically engineered to monitor the supply voltage of microprocessors, microcontrollers, and other voltage-sensitive components, providing a robust defense against power instability.

The MAX810RTR features an active-low reset output, which ensures that the connected µP is held in the reset state whenever the monitored power supply voltage falls below the factory-programmed threshold. The reset output remains asserted for a minimum of 140ms after the supply voltage rises above the reset threshold, ensuring a proper system reset and stable operation upon power-up or during brown-out conditions.

Key features of the MAX810RTR include:

• Factory-programmed precise voltage threshold options for increased system reliability.
• Low supply current of 17µA (typical), which enhances energy efficiency and is ideal for battery-operated devices.
• Guaranteed reset output valid to VCC = 1V, accommodating low voltage operation.
• Immunity to short VCC transients, providing stable performance under noisy conditions.
• Wide operating temperature range from -40°C to +105°C, suitable for industrial applications.

Applications for the MAX810RTR are diverse and include portable devices, computers, controllers, intelligent instruments, and critical microprocessor and microcontroller power monitoring. Its ease of integration and reliable performance make it a go-to choice for designers looking to enhance system stability and extend operational lifespan.

ON Semiconductor's commitment to quality ensures that the MAX810RTR reset circuit meets the stringent requirements of modern electronic systems, providing a simple yet powerful solution for maintaining system integrity.