CAT8801RTB-GT3

Supervisors Overview

The CAT8801RTB-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor system power rails and generate a reset signal. It operates within a supply voltage range of 1.2 V to 5.5 V and features a push-pull output type. The device provides precision voltage monitoring with threshold options including 1.8 V, 2.5 V, 3 V, 3.3 V, and 5 V. It has a typical reset delay time of 270 ms and consumes a maximum power dissipation of 320 mW. The component is housed in an SOT-23-3 package and functions over an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring for digital systems
• Features push-pull output for direct interface with logic circuits
• Operates at low supply voltages starting from 1.2 V

Supervisors Applications

• Microprocessor power supply supervision
• Battery-powered equipment monitoring
• Portable instrumentation reset generation

Supervisors Procurement Notes

Verify the specific suffix code against official datasheets to confirm the exact threshold voltage, as the CAT8801 series utilizes suffixes to denote different trip points. Confirm availability status directly with the manufacturer or authorized distributors, as lifecycle changes may affect current stock levels. Ensure the selected package matches the PCB footprint requirements.

Supervisors Selection Notes

Select this component when a simple, low-power supervisor is required for single-channel voltage monitoring. Consider the specific threshold voltage needed for the target rail and ensure the operating voltage range covers the minimum and maximum supply variations. Verify that the push-pull output capability meets the drive requirements of the downstream reset input.

Supervisors Part Context

This part belongs to the CAT8801 family of microprocessor supervisors from onsemi. These devices are engineered to replace older supervisor ICs in applications where low operating current is critical. The family offers various threshold voltages and packages to suit diverse design constraints while maintaining high accuracy and reliability across industrial temperature ranges.

Supervisors Replacement Considerations

Check for CAT8801 variants with compatible threshold voltages and SOT-23-3 packaging. Verify pinout compatibility and electrical specifications such as reset delay and quiescent current before substitution.