CAT1025LI-25-A2

Supervisors Overview

The CAT1025LI-25-A2 is a supervisory circuit from onsemi designed for CPU monitoring in 5V, 3.3V, and 3V systems. It integrates a 2k-bit CMOS EEPROM with I2C serial interface and manual reset functionality. The device features one monitored input channel with an open drain or open collector output type. Key electrical parameters include a threshold voltage of 2.5 V, a minimum reset timeout of 130 ms, and an operating supply voltage range up to 5.5 V. It operates within a temperature range of -40°C to +85°C and is housed in an 8-PDIP package.

Supervisors Feature Summary

• Integrates 2k-bit CMOS EEPROM with I2C serial interface
• Provides manual reset capability for system control
• Features open drain or open collector output configuration
• Includes write protect input for data security

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Voltage supervision for 5V logic circuits
• System reset generation in industrial controllers
• Data storage protection in microcontroller units

Supervisors Procurement Notes

Verify the specific suffix 'A2' against official datasheets to confirm pinout and electrical characteristics match your design requirements. Confirm RoHS compliance status through current manufacturer documentation. Check for end-of-life notices or alternative part recommendations directly from onsemi before finalizing procurement plans.

Supervisors Selection Notes

Select this component when both voltage supervision and non-volatile data storage are required in a single package. Ensure the 2.5 V threshold aligns with your system's critical voltage levels. Verify that the open drain/open collector output suits your pull-up resistor configuration. Consider the PDIP-8 package constraints for PCB layout and thermal management.

Supervisors Part Context

This part belongs to the CAT1025 series of supervisory circuits. The series offers various threshold voltage options and package types including TSSOP, SOIC, and PDIP. The CAT1025 family combines power management functions with memory capabilities, targeting applications requiring reliable system reset and data retention under varying power conditions.

Supervisors Replacement Considerations

Check for CAT1025LI-25-G as a potential variant within the same series. Verify if CAT1025ZI-25-T3 serves as a surface-mount alternative with similar electrical specifications. Confirm functional compatibility before substituting any other supervisor ICs.