Linear Technology LTC690CS8#TR Microprocessor Supervisory Circuit

The LTC690CS8#TR by Linear Technology is a highly reliable microprocessor supervisory circuit designed to monitor power supplies in microprocessor and digital systems. It provides a precise, low power way to monitor power supply levels and ensure system stability by resetting a microprocessor during power failures. This product is essential for applications that require consistent operation and protection against uncertain power conditions.

Encased in an 8-Lead SOIC package, the LTC690CS8#TR is a versatile component that can be integrated into a wide range of electronic systems. The device is characterized by its low supply current, which is typically 4.5µA, making it an energy-efficient choice for battery-operated systems. This supervisory circuit is designed to withstand transient voltage spikes, ensuring robust performance and reliability in harsh electrical environments.

One of the key features of the LTC690CS8#TR is its ability to provide a reset signal to the microprocessor during power-up, power-down, and brownout conditions. This reset function is maintained for a minimum of 200ms after VCC has risen above the reset threshold level, ensuring that the microprocessor has adequate time to initialize and start up correctly after a power disturbance.

The device operates over a wide voltage range, from 4.65V to 5.5V, making it suitable for 5V-powered systems. It also boasts a low threshold voltage of 4.65V, which is precise to ±2%, ensuring accurate monitoring of the power supply. The LTC690CS8#TR features a reset comparator that is designed to ignore fast transients on VCC, adding to its robustness against noise and disturbances.

In summary, the LTC690CS8#TR microprocessor supervisory circuit is a crucial component for systems that require precise monitoring of their power supply to maintain operational integrity. Its low power consumption, robustness against voltage spikes, and precise threshold accuracy make it an excellent choice for safeguarding microprocessor-based systems.