CAT823SSDI-GT3

Supervisors Overview

The CAT823SSDI-GT3 is a system supervisory voltage reset circuit manufactured by onsemi. It provides basic reset and monitoring functions for electronic systems, including microprocessor and microcontroller applications. The device monitors the system voltage and maintains a reset output until the voltage reaches the specified trip value. It features an internal timer with a minimum duration of 140 ms to allow power supply stabilization. The component operates within a temperature range of -40°C to +85°C and is available in compact TSOT-23 and SC-70 packages.

Supervisors Feature Summary

• Monitors system voltage and issues reset signals upon detecting under-voltage conditions
• Includes an internal timer to ensure power supply stability before releasing reset
• Supports manual reset via pushbutton input for external override capabilities

Supervisors Applications

• Microprocessor and microcontroller based systems
• Intelligent instruments and control systems
• Critical microprocessor monitors in portable equipment

Supervisors Procurement Notes

Verify the specific suffix 'SSDI' against official datasheets to confirm the exact threshold voltage and package variant, as CAT823 variants differ by threshold. Confirm RoHS compliance status and lead times directly with authorized distributors or onsemi sales representatives prior to ordering.

Supervisors Selection Notes

Select this component when a fixed threshold supervisory circuit with watchdog functionality is required. Ensure the specific voltage threshold matches the target system rail. Consider the operating temperature range and package size constraints relative to the PCB layout requirements for TSOT-23 or SC-70 form factors.

Supervisors Part Context

This part belongs to the CAT823 family of system supervisory circuits from onsemi (formerly Catalyst Semiconductor). These devices are designed to replace similar legacy parts like the MAX823 series. The family offers pin-compatible options with varying thresholds and features such as watchdog timers and manual reset inputs for robust system management.

Supervisors Replacement Considerations

Pin and function compatible with MAX823/24/25 products. Verify threshold voltage compatibility when substituting with other CAT823 variants or competitor equivalents.