CAT1026WI-25-GT3

Supervisors Overview

The CAT1026WI-25-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision applications. It integrates a 2-kbit I²C serial EEPROM with the supervisor functionality in an SOIC-8 surface-mount package. The device monitors a single input line and operates within a supply voltage range of 2.7 V to 5.5 V. It features a threshold voltage of 2.5 V, with specific under-voltage and over-voltage thresholds defined at 2.55 V and 2.7 V respectively. The component supports active high, active low, and open drain output configurations. It functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 2-kbit I²C serial EEPROM for non-volatile data storage alongside voltage supervision capabilities.
• Provides CPU reset signal generation based on monitored power supply voltage levels.
• Supports flexible output logic states including active high, active low, and open drain options.

Supervisors Applications

• CPU system supervision in embedded controllers
• Data retention using integrated I²C EEPROM
• Industrial control systems requiring voltage monitoring

Supervisors Procurement Notes

Verify the exact suffix GT3 against official onsemi documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm that the 25 suffix corresponds to the 2.5 V threshold variant. Check current lifecycle status as distribution listings may indicate end-of-life or obsolete conditions. Ensure compatibility with existing PCB footprints for the SOIC-8 package before procurement.

Supervisors Selection Notes

Select this component when a combined solution for power supervision and small-scale non-volatile memory is required. The fixed 2.5 V threshold suits systems operating near this voltage level. Consider the SOIC-8 package size constraints and I²C interface requirements. Verify that the absence of a manual reset pin meets the design safety requirements.

Supervisors Part Context

This part belongs to the CAT1026 series of dual voltage supervisory circuits with integrated I²C serial EEPROM. The series offers various threshold voltages and package options to accommodate different system voltage rails and form factor requirements. It serves as a consolidated solution for power management and data storage in compact electronic designs.

Supervisors Replacement Considerations

Check for other CAT1026 variants with different threshold voltages if the supply rail differs. Verify equivalent parts from other manufacturers offering similar supervisor-EEPROM combinations. Ensure pinout and electrical characteristics match exactly to avoid redesign.

Supervisors FAQ

Does the CAT1026WI-25-GT3 include a manual reset button?

No, this specific model does not feature a manual reset input; it relies solely on voltage monitoring for reset generation.

What is the function of the '25' suffix in the part number?

The '25' suffix indicates that the device has a fixed threshold voltage of 2.5 V for monitoring the power supply.