CAT1026WI-42-GT3

Supervisors Overview

The CAT1026WI-42-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features an integrated 2K-bit EEPROM and operates within a supply voltage range of 2.7 V to 5.5 V. The device monitors a single input with a threshold voltage of 4.2 V and an overvoltage threshold of 4.5 V. It utilizes a SOIC-wide-8 surface-mount package and supports active high, active low, and open drain output configurations. The component includes a reset delay time of 200 ms and consumes a typical operating current of 3 mA. It functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 2K-bit EEPROM for non-volatile data storage alongside voltage supervision capabilities.
• Provides flexible output options including active high, active low, and open drain configurations.
• Features a dedicated reset delay timer to ensure stable system recovery after power events.

Supervisors Applications

• CPU voltage supervision in embedded systems
• Data retention monitoring for microcontroller applications
• Industrial control system power management

Supervisors Procurement Notes

Verify the specific suffix 'GT3' indicates tape-and-reel packaging when sourcing components. Confirm that the 42 designation corresponds to the 4.2 V threshold requirement for your target application. Check manufacturer lifecycle status as some variants may be subject to obsolescence notices. Ensure compatibility with SOIC-wide-8 footprint constraints during PCB layout verification.

Supervisors Selection Notes

Select this part when a combined voltage supervisor and small EEPROM is required in a compact SMD package. The 4.2 V threshold suits systems where the main rail operates near standard logic levels. Consider the open-drain output option if interfacing with different voltage domains. Verify that the 200 ms reset delay aligns with the startup requirements of the controlled processor or memory devices.

Supervisors Part Context

This component belongs to the CAT1026 series of supervisory circuits from onsemi. The series typically combines voltage monitoring with embedded EEPROM functionality. Variants differ primarily by threshold voltage codes and package styles. The WI suffix generally denotes wide-body SOIC packaging suitable for automated assembly processes.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other CAT1026 variants such as CAT1026WI-42-G for tube packaging alternatives if reel availability is constrained. Verify electrical parameter equivalence before substitution.