CAT1023WI-45-A2

Supervisors Overview

The CAT1023WI-45-A2 is a supervisory circuit manufactured by onsemi, integrating a 2k-bit CMOS EEPROM with an I²C serial interface and a system power supervisor. It operates within a voltage range of 2.7 V to 5.5 V and features a 4.5 V threshold for brown-out protection. The device includes a watchdog timer and manual reset input, ensuring valid reset down to 1 V. Packaged in an 8-pin SOIC, it supports industrial temperature ranges from -40°C to +85°C.

Supervisors Feature Summary

• Integrates 2k-bit I²C serial EEPROM with system power supervisor
• Includes watchdog timer and manual reset functionality
• Provides precision voltage monitoring with fixed threshold options
• Features built-in inadvertent write protection

Supervisors Applications

• Microcontroller-based systems requiring memory and supervision
• Industrial control units needing brown-out protection
• Embedded devices utilizing I²C communication interfaces

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels due to potential availability variations. Confirm package integrity and pin configuration match the 8-pin SOIC specification before integration. Ensure environmental compliance requirements align with RoHS standards. Cross-reference datasheet revisions to guarantee functional compatibility with existing system designs.

Supervisors Selection Notes

Select this component when a combined memory and supervision solution is required for microcontroller applications. The fixed 4.5 V threshold suits specific voltage rails without external resistor networks. Consider the 8-pin SOIC package for surface mount assembly constraints. Evaluate the I²C bus speed and EEPROM endurance against system data logging requirements.

Supervisors Part Context

This part belongs to the CAT1023 series, which combines EEPROM storage with voltage supervision. It differs from variants like CAT1021 by lacking dedicated write-protection pins and from CAT1027 by including manual reset capabilities. The 'WI' suffix indicates the SOIC package and industrial temperature range, while '45' specifies the 4.5 V threshold voltage.

Supervisors Replacement Considerations

Direct substitutes include other CAT1023 variants with matching thresholds and packages, such as CAT1023WI-30-T3 for 3V systems. Verify electrical parameters and pinout compatibility before substitution. Alternative manufacturers may offer functionally similar parts, but I²C timing and EEPROM characteristics must be validated.