CAT1163LI42

Supervisors Overview

The CAT1163LI42 is a supervisory circuit manufactured by onsemi, integrating a CPU supervisor with a 16K I2C serial CMOS EEPROM. It features a precision reset controller and a watchdog timer to ensure system reliability. The device monitors a single input voltage with a threshold of 4.2 V and provides active high, active low, and open drain outputs. It operates within a supply voltage range of 2.7 V to 6 V and includes manual reset functionality. The component is housed in an 8-pin PDIP package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 16K I2C serial CMOS EEPROM for non-volatile data storage alongside supervisory functions.
• Includes a precision reset controller with configurable output states and a dedicated watchdog timer.
• Supports manual reset input for direct user control over the system reset state.

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Data retention applications requiring integrated non-volatile memory
• Industrial control systems requiring watchdog protection

Supervisors Procurement Notes

Verify current availability status as this component may be discontinued or subject to limited distribution channels. Confirm package type and suffix codes match specific design requirements. Check for RoHS compliance documentation if required for regulatory adherence. Consult official manufacturer resources for end-of-life notifications or recommended replacement parts.

Supervisors Selection Notes

Select this component when both voltage supervision and small-scale non-volatile storage are required in a single package. Ensure the 4.2 V threshold aligns with the monitored rail voltage. Verify that the PDIP-8 package fits the PCB layout constraints. Consider the I2C interface compatibility with the target microcontroller.

Supervisors Part Context

This part belongs to the CAT1163 family of supervisory circuits produced by onsemi (formerly Catalyst Semiconductor). The family combines power management monitoring with serial EEPROM capabilities. Variants differ primarily in threshold voltages and package styles, such as SOIC-Wide or PDIP configurations.

Supervisors Replacement Considerations

Check for CAT1163LI-42-G or similar variants with updated suffixes. Verify pinout compatibility before substitution. Confirm electrical parameters match the original design specifications.