CAT803TTBI-GT3

Supervisors Overview

The CAT803TTBI-GT3 is a three-pin microprocessor power supply supervisor manufactured by onsemi. It monitors input voltages with precision thresholds for +5.0 V, +3.3 V, +3.0 V, and +2.5 V supplies. The device features an open-drain active-low reset output and operates within an industrial temperature range of -40°C to +85°C. It supports a maximum supply voltage of 5.5 V and consumes only 6 µA of quiescent current. Reset validity extends down to VCC = 1.0 V, ensuring reliable system monitoring.

Supervisors Feature Summary

• Provides precise monitoring of standard digital system power rails including 5V, 3.3V, 3V, and 2.5V configurations.
• Delivers an open-drain active-low reset signal valid down to 1.0 V supply voltage.
• Engineered as a direct replacement for legacy MAX803 devices in industrial applications.

Supervisors Applications

• Computers and servers
• Wireless communications equipment
• Embedded control systems

Supervisors Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm the specific threshold voltage variant matches design requirements, as the suffix indicates a fixed threshold. Check RoHS compliance documentation for environmental regulations. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet to maintain package integrity before assembly.

Supervisors Selection Notes

Select this component when an open-drain active-low reset is required for single-supply monitoring. It is suitable for designs needing direct compatibility with MAX803 pinouts and functionality. Consider the low quiescent current for battery-operated or energy-efficient applications. Verify that the available threshold options align with the target power rail voltage stability requirements.

Supervisors Part Context

This part belongs to the CAT803 family of supervisory circuits designed for digital systems. It shares functional similarities with the CAT809 and CAT810 series, differing primarily in output configuration. The CAT803 specifically provides an open-drain output, whereas other variants offer push-pull configurations. This family targets industrial temperature ranges and offers robust transient immunity for stable operation.

Supervisors Replacement Considerations

The CAT803TTBI-GT3 serves as a direct replacement for the Maxim Integrated MAX803 in industrial temperature applications. Designers migrating from older MAX803 components can utilize this part without modifying the circuit layout or external components, provided the electrical specifications remain compatible with the system requirements.