CAT853MTBI-GT3

Supervisors Overview

The CAT853MTBI-GT3 is a microprocessor power supply supervisor manufactured by onsemi, designed to monitor voltage levels in electronic systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features a threshold voltage of 4.38 V with an overvoltage threshold of 4.45 V. The device provides an active low, push-pull output and includes a reset delay time of 240 ms. It consumes a maximum operating supply current of 20 uA and dissipates up to 320 mW. The component is housed in a SOT-23-3 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides continuous monitoring of system voltage levels to ensure stable operation
• Generates a reset signal when input voltage deviates from specified thresholds
• Features a push-pull output stage for direct interface with digital logic

Supervisors Applications

• Microprocessor power supply supervision
• Embedded system voltage monitoring
• Portable electronic devices requiring low standby current

Supervisors Procurement Notes

Verify the specific suffix GT3 confirms tape and reel packaging if required for automated assembly. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SOT-23-3 footprint matches the design layout. Check for any obsolescence notices or lifecycle changes directly from onsemi before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a single-channel voltage supervisor with a push-pull output is required. The 4.38 V threshold suits applications monitoring 5 V or 3.3 V rails where precise detection is needed. Consider the 20 uA quiescent current for battery-powered designs. Verify that the 240 ms reset delay aligns with system startup timing requirements compared to faster alternatives.

Supervisors Part Context

This part belongs to the CAT853 series of microprocessor supervisors from onsemi. These devices are engineered for reliable voltage monitoring in compact surface-mount packages. The series supports various threshold voltages to accommodate different logic families and power rail standards commonly used in consumer and industrial electronics.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.