CAT812STBI-GT3

Supervisors Overview

The CAT812STBI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single-input power rails. It operates within a supply voltage range of 1.2 V to 5.5 V and features a push-pull output configuration. The device includes a manual reset input and provides a reset delay time of 240 ms. It is housed in an SOT-143-4 surface-mount package and supports operation across a temperature range of -40°C to +85°C. The component draws a typical operating supply current of 8 µA and offers overvoltage detection capabilities with a threshold of 2.96 V.

Supervisors Feature Summary

• Integrates a manual reset input for user-initiated system control alongside automatic voltage supervision.
• Provides active high reset signaling via a push-pull output structure for direct interface compatibility.
• Features low quiescent current consumption suitable for battery-powered or energy-efficient designs.

Supervisors Applications

• Microprocessor power supply supervision
• Portable electronic devices requiring voltage monitoring
• Industrial control systems

Supervisors Procurement Notes

Verify the specific suffix GT3 against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure the SOT-143-4 package dimensions align with your PCB footprint constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when a manual reset function is required in addition to automatic under-voltage or over-voltage detection. Compare the 240 ms reset delay against system startup timing requirements to ensure adequate stabilization time. Evaluate the 8 µA supply current against total system power budgets for portable applications.

Supervisors Part Context

This part belongs to the CAT812 series of microprocessor power supply supervisors from onsemi. The series typically offers various threshold voltages and output polarities to accommodate different logic families and power rail specifications. The STBI suffix indicates specific threshold and package variations within this product line.

Supervisors Replacement Considerations

Consult official cross-reference lists for verified substitutes such as other CAT812 variants with compatible thresholds. Verify that any replacement maintains the SOT-143-4 package and manual reset functionality if required by the existing design.

Supervisors FAQ

Does the CAT812STBI-GT3 include a watchdog timer?

No, this specific model does not include a watchdog timer; it functions solely as a voltage supervisor with manual reset capability.

What is the reset delay time for this component?

The reset delay time is specified as 240 ms, ensuring the monitored voltage remains stable before asserting the reset signal.