CAT810MTBI-GT3

Supervisors Overview

The CAT810MTBI-GT3 is a single-channel voltage supervisory circuit manufactured by onsemi, designed to monitor power supply voltages in digital systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features an active high, push-pull output. The device triggers a reset signal when the monitored voltage falls below a threshold of 3.93 V or exceeds 4.06 V, with a fixed reset delay time of 240 ms. It consumes 8 uA of operating current and functions reliably across an industrial temperature range from -40°C to +85°C. Packaged in a compact SOT-23-3 surface-mount format, it lacks manual reset, watchdog timer, or battery backup switching capabilities.

Supervisors Feature Summary

• Monitors a single power supply input for under-voltage and over-voltage conditions
• Generates an active high reset signal via a push-pull output structure
• Operates with low quiescent current consumption suitable for power-sensitive applications

Supervisors Applications

• Monitoring microprocessor power supplies
• Digital system power supervision
• Industrial temperature range electronic circuits

Supervisors Procurement Notes

Verify the specific suffix 'MTBI' against official datasheets to confirm the exact threshold voltage and package variant, as minor suffix changes can alter electrical characteristics. Confirm RoHS compliance status through the manufacturer's latest documentation. Ensure the component source is authorized to avoid counterfeit risks, particularly given the availability of obsolete or discontinued variants within the same family.

Supervisors Selection Notes

Select this component when a simple, low-power supervisor with an active high output is required for 3.3V or 5V logic systems. It serves as a direct replacement for legacy MAX810 devices in industrial applications. Consider alternative thresholds if the system requires different trip points, as this model has fixed internal references. Verify that the SOT-23-3 package fits the PCB layout constraints.

Supervisors Part Context

This part belongs to the CAT810 series of 3-pin microprocessor power supply supervisors originally developed by Catalyst Semiconductor and now produced by onsemi. The series provides basic power monitoring functions without complex features like watchdog timers. It is positioned as a cost-effective solution for essential reset generation in embedded systems requiring reliable power-up sequencing and brown-out protection.

Supervisors Replacement Considerations

CAT810JTBI-GT3: Similar active high output but different threshold voltage (4V).

Supervisors FAQ

Does the CAT810MTBI-GT3 include a manual reset input?

No, the CAT810MTBI-GT3 does not feature a manual reset input; it relies solely on automatic power supply monitoring.

What is the reset delay time for this supervisory circuit?

The device has a fixed reset delay time of 240 ms after the power supply voltage crosses the threshold level.