CAT853STBI-GT3

Supervisors Overview

The CAT853STBI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring power supply rails in digital systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features an open collector or drain output type. The device includes a manual reset input and provides a fixed reset delay time of 20 µs. It supports threshold voltages of 3.3 V and 5 V, with a specific undervoltage threshold of 2.4 V noted in related datasheets. The component is housed in a SOT-23-3 surface-mount package and is rated for operation between -40 °C and +85 °C.

Supervisors Feature Summary

• Provides active-low supervision with open collector/drain output configuration
• Includes manual reset capability for system control
• Operates at low supply voltages starting from 1.2 V
• Features fast reset delay timing for rapid response

Supervisors Applications

• Monitoring microprocessor power supplies
• Digital system voltage supervision
• Battery-powered device power management

Supervisors Procurement Notes

Verify the exact suffix STBI against official onsemi documentation to confirm pinout and electrical characteristics, as variations exist within the CAT853 family. Confirm RoHS compliance status through current manufacturer declarations. Check for obsolescence notices or lifecycle changes directly from the supplier before finalizing procurement plans.

Supervisors Selection Notes

Select this component when an open-drain output is required for wired-OR configurations or level shifting. Ensure the application voltage does not exceed the 5.5 V maximum rating. Consider the 20 µs reset delay if faster response times are needed, or if the manual reset feature aligns with the system's startup sequence requirements.

Supervisors Part Context

This part belongs to the CAT853 series of voltage supervisors from onsemi. It is distinct from the CAT812 and CAT811 series which offer different output types and packages. The CAT853 series is characterized by its low operating voltage range and compact SOT-23-3 packaging, suitable for space-constrained portable electronics.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs by comparing pinouts and electrical specifications with alternative supervisors from the same manufacturer.