CAT1023WI-45-G

Supervisors Overview

The CAT1023WI-45-G is a supervisory circuit integrating a 2k-bit serial EEPROM with I²C interface, manual reset capability, and a watchdog timer. It operates within a supply voltage range of 2.7V to 5.5V. The device features a fixed under-voltage threshold of 4.5V and an over-voltage threshold of 4.75V. It is housed in an 8-pin SOIC package and supports industrial temperature ranges from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 2k-bit CMOS EEPROM with I²C serial interface for data storage
• Includes built-in power supply monitoring with brown-out protection
• Features a watchdog timer to monitor system integrity
• Provides manual reset input capability for system control

Supervisors Applications

• Microcontroller-based systems requiring memory and supervision
• Industrial control units needing data retention during power events
• Embedded systems utilizing I²C communication protocols

Supervisors Procurement Notes

Verify the manufacturer origin as the part was originally produced by Catalyst Semiconductor and later acquired by onsemi. Confirm the specific suffix indicates the correct package type and temperature rating. Check current availability status as legacy parts may have limited stock or obsolescence notices. Ensure RoHS compliance documentation matches the specific production batch requirements for your assembly process.

Supervisors Selection Notes

Select this component when a combined solution for non-volatile memory and power supervision is required in a compact footprint. The fixed 4.5V threshold suits 5V and 3.3V logic systems. Consider the I²C interface compatibility with the target microcontroller. Evaluate the need for the integrated watchdog timer versus external implementations based on system complexity and reliability requirements.

Supervisors Part Context

This part belongs to the CAT102x family of supervisory circuits which combine EEPROM memory with power management functions. The family includes variants like CAT1021 and CAT1022 with different pinouts or feature sets. The WI suffix typically denotes the SOIC-8 package variant within this series, designed for surface-mount applications in consumer and industrial electronics.

Supervisors Replacement Considerations

CAT1023WI-45-GT3 is a documented tape-and-reel variant of the same electrical specification.