CAT1026LI-45-G

Supervisors Overview

The CAT1026LI-45-G is a dual voltage supervisory circuit manufactured by onsemi, designed for monitoring two independent power supply rails. It integrates a 2-kbit CMOS EEPROM accessible via an I²C serial interface. The device operates within a supply voltage range of 2.7 V to 5.5 V and features a fixed threshold voltage of 4.5 V for both channels. It supports manual reset functionality and lacks a watchdog timer. The component is available in 8-pin PDIP and SOIC packages, with an operating temperature range spanning from -40°C to +85°C.

Supervisors Feature Summary

• Dual-channel voltage supervision for independent power rail monitoring
• Integrated 2-kbit EEPROM with I²C serial interface for data storage
• Manual reset capability for system control
• Open-drain output structure for flexible logic interfacing

Supervisors Applications

• Multi-rail power supply monitoring in embedded systems
• Data retention management in industrial control units
• System integrity verification in communication equipment
• Voltage tracking in automotive electronic modules

Supervisors Procurement Notes

Verify the specific package variant (PDIP or SOIC) required for your design, as the base part number may correspond to multiple physical forms. Confirm the I²C address configuration if multiple devices are used on the same bus. Ensure the 4.5 V threshold aligns with your target supply voltage levels. Check for RoHS compliance documentation prior to final procurement approval.

Supervisors Selection Notes

Select this component when dual voltage monitoring combined with non-volatile data storage is required. The integrated EEPROM eliminates the need for external memory chips, reducing board space. The open-drain outputs allow for wired-OR configurations. Consider the thermal performance and package size constraints when choosing between PDIP and SOIC options for the final assembly.

Supervisors Part Context

This part belongs to the CAT1026 series of supervisory circuits from onsemi. It is distinct from single-channel variants like the CAT1025 and other package-specific versions such as the CAT1026WI-45-G. The LI suffix typically denotes the PDIP package option within this product family.

Supervisors Replacement Considerations

Direct substitutes include other CAT1026 series parts with matching thresholds and EEPROM capacity. Verify pin compatibility before replacing with different package types like the WI or ZI variants. Cross-reference with similar dual-supervisor ICs from other manufacturers only if electrical parameters and interface protocols match exactly.