CAT1162WI25

Supervisors Overview

The CAT1162WI-25 is a supervisory circuit integrating a 16-kilobit serial CMOS EEPROM with an I²C bus interface. It features a precision power supply voltage monitor for 5V, 3.3V, and 3V systems with a 2.5V threshold. The device provides active high or low reset outputs and operates within a 2.7V to 5.5V supply range. It utilizes low-power CMOS technology and includes hardware memory write protection. The component is housed in an 8-pin SOIC package.

Supervisors Feature Summary

• Integrates a 16K-bit serial EEPROM with hardware write protection
• Provides system power supervision with brown-out protection
• Supports standard I²C bus communication interface

Supervisors Applications

• Microcontroller-based system monitoring
• CPU supervisor circuits
• Data storage in embedded systems

Supervisors Procurement Notes

Verify the exact suffix (e.g., -GT3) against current manufacturer specifications as older variants may be obsolete. Confirm RoHS compliance status and lead times through authorized distributors. Ensure the selected package matches the PCB footprint requirements. Check for end-of-life notifications before finalizing design-in decisions.

Supervisors Selection Notes

Select this component when both CPU supervision and non-volatile data storage are required in a single package. Compare with the CAT1161 if a watchdog timer is necessary, as the CAT1162 lacks this feature. Verify that the I²C address and voltage thresholds align with the target system architecture.

Supervisors Part Context

This part belongs to the CAT116x family of supervisory circuits manufactured by onsemi. These devices combine memory and monitoring functions to reduce board space. The CAT1162 specifically excludes the watchdog timer found in the CAT1161 variant, offering a lower-cost solution for basic supervision needs.

Supervisors Replacement Considerations

The CAT1161WI-25 is a functional substitute but includes an additional watchdog timer. Verify pin compatibility and software differences regarding the extra timer functionality before swapping.