ON Semiconductor CAT809RTBI-T3-D4 Microcontroller Supervisor

The ON Semiconductor CAT809RTBI-T3-D4 is a high-performance microcontroller supervisor integrated circuit designed to enhance system reliability in a wide range of applications. This compact component is engineered to monitor the power supply voltage in digital systems and provide a significant layer of protection against low voltage conditions, which can lead to system malfunctions.

With a precision voltage monitor, the CAT809RTBI-T3-D4 ensures that the system microcontroller, or other voltage-sensitive components, are reset to a known state in the event of a power failure or brown-out condition. The device features an active-low reset output, which remains asserted until the supply voltage returns to a safe operating level and a reset timeout period has elapsed, ensuring the system has stabilized before normal operation resumes.

The reset threshold voltage for the CAT809RTBI-T3-D4 is factory-programmed at a specific voltage level, which is ideal for monitoring 3V, 3.3V, and 5V powered systems. The tight reset threshold accuracy and built-in glitch immunity prevent false resets from transient voltage spikes, thereby enhancing system stability and reliability.

This supervisor IC is available in a compact 4-pin SC-70 package, making it suitable for space-constrained applications. Its low power consumption is a significant advantage for battery-powered devices, where energy efficiency is paramount. The CAT809RTBI-T3-D4 operates over a wide temperature range, making it versatile for use in various environments, from industrial to consumer electronics.

Key features of the CAT809RTBI-T3-D4 include:

• Active-low reset output with built-in delay
• Precision monitoring of 3V, 3.3V, and 5V supply voltages
• Factory-programmed reset threshold voltage
• Low power consumption
• High reset threshold accuracy
• Immunity to short duration voltage transients
• Wide operating temperature range
• Compact SC-70 packaging

With its combination of features, the CAT809RTBI-T3-D4 from ON Semiconductor is an excellent choice for system designers looking to increase the reliability and robustness of their digital systems.