CAT810STBI-T3

Supervisors Overview

The CAT810STBI-T3 is a single-channel voltage supervisory circuit manufactured by onsemi, designed to monitor power supply integrity in electronic systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed under-voltage threshold of 2.93 V with an over-voltage threshold of 2.96 V. The device utilizes a push-pull active-high output configuration and includes a reset delay time of 240 ms to ensure stable system recovery. It consumes a typical operating current of 6 uA and is housed in a compact SOT-23-3 surface-mount package. The component supports an industrial temperature range from -40°C to +85°C and lacks manual reset, watchdog timer, or battery backup switching capabilities.

Supervisors Feature Summary

• Provides continuous monitoring of a single power rail with defined under-voltage and over-voltage detection thresholds.
• Delivers a push-pull active-high signal to indicate valid power conditions without requiring external pull-up resistors.
• Incorporates a fixed internal reset delay to prevent premature assertion of the reset signal during power transitions.

Supervisors Applications

• Microprocessor power supply supervision
• Portable electronic device power management
• Industrial control system voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix T3 against official datasheets to confirm reel packaging specifications and tape-and-reel dimensions. Confirm RoHS compliance status through the manufacturer's latest documentation. Ensure the sourcing channel provides authentic components with traceable lot codes to avoid counterfeit risks. Cross-reference the part number with the official obsolescence status, as this variant may be discontinued or subject to limited availability constraints.

Supervisors Selection Notes

Select this component when a fixed 2.93 V threshold is required for low-voltage logic systems. The SOT-23-3 package offers space efficiency for compact designs. Consider the 6 uA quiescent current for battery-operated applications. Verify that the active-high output polarity matches the receiving input requirements of the monitored device. Ensure the 240 ms delay aligns with the startup timing of the target system.

Supervisors Part Context

This part belongs to the CAT810 series of voltage supervisors from onsemi. The series typically includes variants with different threshold voltages and output polarities. The STBI suffix indicates a specific threshold voltage (2.93 V), push-pull active-high output, and SOT-23-3 package. Other series members may offer manual reset or different voltage levels, but share similar operational principles and package options.

Supervisors Replacement Considerations

Direct substitutes include other CAT810 variants with identical 2.93 V thresholds and active-high outputs, such as CAT810STBI-GT3 if available. Verify pinout compatibility and electrical characteristics before substitution. Alternative manufacturers may offer functionally equivalent parts, but require careful validation of threshold tolerances and output drive strength.