The MAX808LCSA from Maxim Integrated is a highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with +5V-powered µP.

This compact supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX808LCSA features an active-low reset signal with a significant delay, typically 240ms, ensuring the system has ample time to stabilize before the processor starts its operation. The reset output remains operational with VCC as low as 1.2V, making it suitable for low-voltage applications.

The device comes in a space-saving 8-pin SO package, which is ideal for systems where space is at a premium. It is designed to support a wide range of microprocessors, including the most popular ones in the industry.

Key features of the MAX808LCSA include:

• Precision monitoring of +5V power-supply voltages
• Fully specified over temperature
• No external components needed
• Power supply transient immunity
• Low cost and high reliability
• Low supply current of 20µA (typical)

This device is particularly useful for portable devices, computers, controllers, and intelligent instruments where reliable system operation is critical. With its built-in features, the MAX808LCSA ensures that systems operate smoothly by providing a predictable, controlled start-up sequence.

Maxim Integrated's commitment to quality means that the MAX808LCSA is manufactured to the highest standards, ensuring that it meets the rigorous demands of industrial applications. Whether you're designing a new system or upgrading an existing one, the MAX808LCSA is an excellent choice for managing your microprocessor's power supply and reset functions.