CAT809LEUR-T3

Supervisors Overview

The CAT809LEUR-T3 is a microprocessor power supply supervisor from onsemi, designed for digital system monitoring. It features a push-pull active low reset output and operates within an industrial temperature range of -40°C to +85°C. The device monitors the +5.0 V supply with specific tolerance thresholds of -5%, -10%, and -20%. It provides reset validity down to a minimum supply voltage of 1.0 V and includes power supply transient immunity. The component is housed in a SOT-23 package and is RoHS compliant.

Supervisors Feature Summary

• Push-pull active low reset output configuration
• Precision monitoring of +5.0 V power supplies with multiple tolerance options
• Reset valid down to 1.0 V supply voltage
• Power supply transient immunity

Supervisors Applications

• Computers and servers
• Wireless communications systems
• Embedded control systems
• Intelligent instruments

Supervisors Procurement Notes

Verify the specific threshold voltage variant required for your design, as the CAT809 series covers multiple precision levels for the +5.0 V rail. Confirm that the push-pull output type aligns with your interface requirements. Ensure the operating temperature range meets your environmental specifications. Check for any pinout compatibility if replacing legacy components like the MAX809.

Supervisors Selection Notes

Select this part when a push-pull output is preferred over open-drain or active high configurations. It serves as a direct replacement for the MAX809 in industrial applications. Consider the 6 µA quiescent current for low-power designs. Verify that the SOT-23 package size fits your PCB layout constraints.

Supervisors Part Context

This component belongs to the CAT809 family of supervisory circuits manufactured by onsemi. These devices are engineered to monitor power supplies in digital systems, ensuring reliable operation under varying voltage conditions. The family offers different output configurations and threshold voltages to suit various application needs.

Supervisors Replacement Considerations

The CAT809LEUR-T3 is documented as a direct replacement for the MAX809 in applications operating over the industrial temperature range. Ensure that the target system supports the push-pull output drive capability.