CAT1022WI-42-GT3

Supervisors Overview

The CAT1022WI-42-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision with integrated 2Kb EEPROM. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.2 V. The device provides a manual reset input and includes a watchdog timer function. It utilizes an open-drain output type with a reset delay time of 200 ms. Packaged in an SOIC-wide-8 surface-mount format, it supports single-input monitoring without battery backup switching capabilities.

Supervisors Feature Summary

• Integrates non-volatile 2Kb EEPROM for data storage alongside voltage supervision functions
• Includes built-in watchdog timer to monitor system operation integrity
• Provides manual reset capability via dedicated input pin
• Features open-drain output configuration for flexible interfacing

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Data retention applications requiring integrated EEPROM
• Industrial control units needing watchdog protection
• Consumer electronics requiring voltage supervision

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to procurement. Note that this specific part number may be subject to discontinuation notices; check current lifecycle status with the supplier. Ensure packaging specifications match production requirements. Validate datasheet revisions against intended design specifications.

Supervisors Selection Notes

Select this component when simultaneous voltage supervision and small-scale data storage are required in a single package. Consider the 4.2 V threshold compatibility with target supply rails. Evaluate the SOIC-8 footprint constraints against PCB layout limitations. Assess the need for watchdog functionality versus simpler supervisor alternatives. Verify operating temperature range suitability for the application environment.

Supervisors Part Context

This device belongs to the CAT1022 series of supervisory circuits from onsemi. It combines power management monitoring with memory functionality. The WI suffix indicates wide-body SOIC packaging. The GT3 designation typically refers to tape-and-reel packaging configurations. This series targets cost-sensitive applications requiring basic system protection and data retention.

Supervisors Replacement Considerations

Check for CAT1022WI-30-GT3 if a 3.0 V threshold is acceptable. Verify CAT1022WI-45-GT3 availability if a 4.5 V threshold suits the design. Confirm package compatibility before substituting. Review functional differences in watchdog implementation across variants.