CAT1021LI-30-G

Supervisors Overview

The CAT1021LI-30-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features a single monitored input with a threshold voltage of 3 V and an undervoltage threshold of 3 V. The device operates within a supply voltage range of 2.7 V to 5.5 V and includes a manual reset function alongside a watchdog timer. It is housed in an 8-pin PDIP package with through-hole mounting style. The component supports an operating temperature range from -40°C to +85°C and draws a typical supply current of 3 mA.

Supervisors Feature Summary

• Integrates voltage supervision with manual reset capability for reliable system control
• Includes built-in watchdog timer functionality to monitor processor activity
• Supports through-hole installation in standard PDIP-8 packages

Supervisors Applications

• CPU voltage monitoring systems
• Embedded controller reset circuits
• Industrial power management supervision

Supervisors Procurement Notes

Verify component authenticity through authorized channels as the part status is listed as obsolete. Confirm RoHS compliance documentation and material composition declarations prior to integration. Check for available replacement options due to end-of-life status. Ensure packaging integrity matches original specifications for legacy system maintenance.

Supervisors Selection Notes

Select this component when a through-hole supervisory circuit with integrated watchdog is required. Verify that the 3 V threshold aligns with the target system voltage levels. Consider the PDIP-8 package constraints for PCB layout. Evaluate alternative surface-mount variants if space limitations exist in the design.

Supervisors Part Context

This part belongs to the CAT1021 series of supervisory circuits from onsemi. The series provides voltage monitoring solutions with varying thresholds and package options. The LI suffix indicates the specific threshold voltage configuration and package type within the product family.

Supervisors Replacement Considerations

Consult official substitution lists for equivalent supervisory circuits. Verify pin compatibility and threshold voltage matching before replacing obsolete inventory.