The CAT809SEUR-T10 from ON Semiconductor is a high-performance supervisory circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. This microprocessor (µP) supervisory circuit ensures that your system operates reliably within its voltage parameters and safeguards it against low voltage conditions, which can lead to system errors and data corruption.

This precision device features a factory-trimmed threshold voltage that activates the reset signal whenever VCC falls below the minimum VCC threshold. The reset signal remains active for a minimum of 140ms after VCC rises above the reset threshold level, ensuring the system has adequate time to stabilize before the processor restarts its operations. This feature is crucial for preventing the system from restarting prematurely, which could cause additional errors.

The CAT809SEUR-T10 is characterized for operation over a wide temperature range of -40°C to +85°C, making it suitable for use in a variety of challenging environments and applications. Its low power consumption makes it an excellent choice for portable and battery-operated devices where power efficiency is a priority.

This supervisory circuit comes in a compact 3-pin SOT-23 package, which is ideal for space-constrained applications. Its small footprint ensures that it can be easily integrated into existing designs without requiring significant board space or redesign.

Key features of the CAT809SEUR-T10 include:

• Precision monitoring of 3V, 3.3V, and 5V supply voltages
• 140ms minimum reset pulse width
• Low supply current of 6µA (typical)
• Debounced manual reset input
• Watchdog timer with 1.6s timeout (typical)

Whether you are designing consumer electronics, automotive systems, or industrial controls, the CAT809SEUR-T10 offers the reliability and performance needed to ensure your system operates without interruption. ON Semiconductor's commitment to quality and performance makes this supervisory circuit a top choice for designers looking to enhance system reliability and protect against the detrimental effects of power instability.