Linear Technology's LTC699CS8 Microprocessor Supervisory Circuit

The LTC699CS8 is a precision microprocessor supervisory circuit designed by Linear Technology to ensure the reliable operation of microprocessor (µP) systems. This compact and robust component comes in an 8-lead SOIC package, which is suitable for space-constrained applications. Its primary function is to monitor the power supply voltage of µP systems, providing a reset signal to the µP whenever necessary.

One of the key features of the LTC699CS8 is its ability to provide a precise reset threshold voltage. This ensures that the µP resets consistently and operates correctly following power-up, power-down, and brownout conditions. The reset timeout period is also guaranteed to be a minimum of 200ms, providing ample time for the µP to initialize properly.

The device operates over a wide voltage range, from 1V to 5.5V, making it versatile for various applications, including portable electronics, embedded systems, and industrial controls. The LTC699CS8 also boasts a low supply current of 15µA, which is particularly beneficial for battery-powered devices where power efficiency is critical.

Additional features of the LTC699CS8 include:

• Reset Output Stage: The reset output stage can sink or source current, which allows it to interface directly with either TTL or CMOS logic levels.
• Temperature Range: The device is operational over the commercial temperature range, ensuring reliability under varying environmental conditions.
• Power Supply Glitch Immunity: The LTC699CS8 maintains reset output in the event of brief interruptions of the power supply, preventing unnecessary system resets.

To ensure the highest levels of system stability and to prevent erratic behavior, the LTC699CS8 is a critical component for any design that demands reliable microprocessor supervision. Its ease of integration and robust feature set make it a preferred choice for designers looking to enhance the operational integrity of their microprocessor-based systems.

Overall, the LTC699CS8 from Linear Technology is a high-quality, reliable solution for microprocessor system management, offering designers a compact, efficient, and cost-effective supervisory component.