CAT803SSDI-T3

Supervisors Overview

The CAT803SSDI-T3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single power supply rails. It operates within a maximum supply voltage of 5.5 V and features an active low, open-drain output. The device provides a reset delay time of 240 ms and supports threshold voltages of 2.5 V, 3 V, 3.3 V, and 5 V. It consumes 15 uA of operating current and dissipates up to 320 mW of power. The component functions across an industrial temperature range from -40 C to +85 C and is housed in a SOT-23-3 package.

Supervisors Feature Summary

• Provides voltage supervision with active low open-drain output
• Features ultra-low operating current consumption
• Includes built-in reset delay timer for stable power-up sequencing

Supervisors Applications

• Microprocessor power supply monitoring
• Battery-powered system voltage supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the exact suffix designation, as official documentation lists CAT803SSDI-GT3 rather than T3. Confirm RoHS compliance status and check for end-of-life notices. Ensure the supplier provides valid traceability data. Cross-reference the manufacturer part number against authorized distributor catalogs to avoid counterfeit components. Validate package type and pin configuration before procurement.

Supervisors Selection Notes

Select this component when a simple, low-current supervisor is required for single-rail monitoring. Consider the specific threshold voltage options available within the series. Evaluate the open-drain output compatibility with the target logic levels. Review the reset delay timing requirements for the application. Compare power dissipation limits against thermal constraints.

Supervisors Part Context

This part belongs to the CAT803 series of supervisory circuits from onsemi. The series offers various threshold voltages and package options. Similar parts include CAT803STBI-T3 and CAT803TTBI-T3. The family is designed for general-purpose voltage monitoring in industrial and consumer electronics.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include MAX6328XR29+T from Analog Devices Inc./Maxim Integrated.