ON Semiconductor CAT809SEUR-T Voltage Supervisor

The CAT809SEUR-T from ON Semiconductor is a highly reliable voltage supervisor device designed to maintain system integrity by monitoring the supply voltage of digital systems. It is an essential component for applications requiring precise voltage monitoring to protect sensitive electronic circuits from improper operation at low voltages.

This voltage supervisor operates over a wide voltage range and features a low threshold voltage of 3.08V, making it suitable for 3.3V systems. It is engineered to assert a reset signal whenever the VCC supply voltage falls below the factory-programmed threshold, ensuring that all system components are reset simultaneously and properly upon power-up, power-down, or brown-out conditions.

The CAT809SEUR-T comes in a compact SOT-23 package, which is ideal for space-constrained applications. The device's small footprint allows for easy integration into various designs, from consumer electronics to industrial control systems.

With its built-in hysteresis, the CAT809SEUR-T provides noise immunity and ensures stable operation even in environments with high levels of electrical noise. The device features an active-low reset output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, providing ample time for the system to stabilize before normal operation resumes.

Key features of the CAT809SEUR-T include:

• Precision monitoring of 3.3V power supplies
• Factory-trimmed threshold voltage for high accuracy
• Low supply current, ideal for battery-operated equipment
• Minimum reset pulse width of 140ms
• Operating temperature range from -40°C to +85°C
• Built-in hysteresis to reject transient glitches
• Compact SOT-23 packaging for space-saving designs

The CAT809SEUR-T voltage supervisor is a trusted solution for designers looking to enhance the reliability and performance of their digital systems. Its precision voltage monitoring capabilities and robust feature set make it a versatile choice for a broad range of applications.