CAT1025LI25

Supervisors Overview

The CAT1025LI-25-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a precision power supply monitor with a 2k-bit CMOS EEPROM featuring an I²C serial interface. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports a threshold voltage of 2.5 V. Key electrical parameters include a maximum operating temperature of +85°C, a minimum of -40°C, and a typical quiescent current of 3 mA. It provides manual reset functionality and includes write protection via the WP pin.

Supervisors Feature Summary

• Integrates a 2k-bit serial EEPROM with I²C bus interface and manual reset input
• Provides precision power supply voltage monitoring with brown-out protection
• Includes built-in inadvertent write protection controlled by the WP pin

Supervisors Applications

• Microcontroller-based system memory supervision
• CPU power supply monitoring in industrial environments
• Brown-out protection for ASICs and peripherals

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notices or Product Change Notifications. Ensure the specific suffix matches required package and threshold specifications before procurement.

Supervisors Selection Notes

Select this component when both voltage supervision and non-volatile data storage are required in a single package. Verify that the 2.5 V threshold aligns with the target system's logic levels. Consider the PDIP-8 package constraints for through-hole mounting requirements and thermal dissipation limits.

Supervisors Part Context

This part belongs to the CAT1025 series, which combines supervisory circuits with I²C EEPROMs. It is distinct from the CAT1024 series by including a Write Protect pin. The LI-25 suffix indicates a linear voltage range, 2.5 V threshold, and PDIP-8 through-hole packaging.

Supervisors Replacement Considerations

Check for CAT1025LI-25 without the G suffix for legacy compatibility. Verify equivalent parts from other manufacturers offering similar I²C EEPROM and supervisor combinations with matching 2.5 V thresholds.