CAT1026LI-28-G

Supervisors Overview

The CAT1026LI-28-G is a voltage supervisory circuit manufactured by onsemi, designed for monitoring system power integrity. It operates within a supply voltage range of 2.7 V to 5.5 V and features a specific under-voltage threshold of 2.85 V with an over-voltage threshold of 3 V. The device integrates a 2-kbit CMOS EEPROM accessible via the I²C serial interface. Packaged in an 8-pin PDIP format, it supports through-hole mounting and functions reliably across an industrial temperature range from -40°C to +85°C. The component draws a typical operating current of 3 mA and includes manual reset capability without a watchdog timer.

Supervisors Feature Summary

• Integrates dual voltage supervision with under-voltage and over-voltage detection capabilities
• Includes non-volatile 2-kbit CMOS EEPROM storage accessible via I²C serial communication
• Provides manual reset functionality for system control

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Industrial control unit voltage supervision
• Consumer electronics power management

Supervisors Procurement Notes

Verify component authenticity against official onsemi documentation due to potential counterfeit risks. Confirm package type matches the specified PDIP-8 configuration. Check for RoHS compliance status as indicated in current datasheets. Ensure the manufacturing date code aligns with project requirements, noting that availability may vary based on production lifecycle status.

Supervisors Selection Notes

Select this part when through-hole mounting is required for robust mechanical stability in industrial environments. Choose this variant for applications needing manual reset intervention alongside automatic voltage supervision. Verify that the 2.85 V threshold aligns with the target system's logic levels. Consider the PDIP-8 package constraints regarding PCB space and thermal dissipation compared to surface-mount alternatives.

Supervisors Part Context

This component belongs to the CAT1026 series of supervisory circuits produced by onsemi. The series combines voltage monitoring with serial EEPROM storage for data retention during power events. The LI suffix indicates the PDIP package and industrial temperature rating, while the 28 designation specifies the 2.8 V nominal threshold level. This family targets reliable operation in demanding electronic environments.

Supervisors Replacement Considerations

CAT1026LI-28-GT is a compatible tube-packaged variant within the same series offering identical electrical specifications and pinout compatibility.