CAT823TSDI-GT3

Supervisors Overview

The CAT823TSDI-GT3 is a system supervisory voltage reset circuit manufactured by onsemi, designed to monitor power supply integrity in electronic systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed under-voltage threshold of 3 V with an over-voltage threshold of 3.15 V. The device provides an active low, push-pull output and includes a manual reset input alongside a watchdog timer function. It is housed in a TSOT-23-5 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Monitors system voltage and maintains reset output until the specified trip value is reached
• Includes internal timer to allow power supply stabilization before releasing reset
• Supports automatic microprocessor restart after power failure events
• Features manual reset capability for external override via pushbutton

Supervisors Applications

• Microprocessor and microcontroller based systems
• Intelligent instruments and control systems
• Critical microprocessor monitors
• Portable equipment requiring brownout detection

Supervisors Procurement Notes

Verify component authenticity through authorized distribution channels due to potential counterfeit risks. Confirm RoHS compliance status and material composition declarations prior to integration. Ensure packaging specifications match design requirements for surface mount assembly processes. Validate thermal performance characteristics against application environmental conditions.

Supervisors Selection Notes

Select this component when a fixed 3 V under-voltage threshold is required for system monitoring. Consider the TSOT-23-5 package for space-constrained designs. Evaluate the need for manual reset functionality and watchdog timer integration. Compare operating current consumption against battery-powered application constraints.

Supervisors Part Context

This part belongs to the CAT823 series of supervisory circuits from onsemi, which also includes variants like CAT823STDI-GT3. These devices are pin and function compatible with older MAX823/24/25 products. The series provides basic reset and monitoring functions for electronic systems, ensuring reliable operation under varying power supply conditions.

Supervisors Replacement Considerations

Direct substitutes include CAT823STDI-GT3, which shares identical pinout and functional compatibility. Verify that alternative components meet the same 3 V threshold and TSOT-23-5 package requirements. Cross-reference datasheets to ensure equivalent watchdog and manual reset capabilities.