CAT1022WI-45-GT3

Supervisors Overview

The CAT1022WI-45-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision with integrated 2K-bit EEPROM. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.5 V. The device provides an open-drain output with a manual reset capability and includes a watchdog timer. It exhibits a reset delay time of 200 ms and consumes 10 uA of operating current. The component is housed in an SOIC-Wide-8 package and supports industrial temperature ranges from -40 C to +85 C.

Supervisors Feature Summary

• Integrates non-volatile memory for data retention alongside power monitoring functions
• Includes a watchdog timer for system reliability enhancement
• Supports manual reset input for user-initiated control

Supervisors Applications

• CPU power supply monitoring in embedded systems
• Industrial control units requiring data storage
• Consumer electronics with low-power requirements

Supervisors Procurement Notes

Verify component authenticity through authorized channels as the part is marked obsolete. Confirm package integrity and pin alignment against the SOIC-Wide-8 specification. Check datasheet revisions for any functional updates. Ensure compatibility with existing PCB footprints. Validate thermal performance under maximum load conditions.

Supervisors Selection Notes

Consider the 4.5 V threshold when designing for 5 V logic systems. Evaluate the 2K EEPROM capacity against application data storage needs. Assess the 10 uA quiescent current impact on battery life. Verify that the open-drain output suits the downstream interface requirements. Confirm industrial temperature rating meets environmental constraints.

Supervisors Part Context

This component belongs to the CAT1022 series of supervisory circuits. It combines voltage monitoring with serial EEPROM functionality. The series targets applications needing both system reset management and persistent data storage. It serves as a compact solution for microcontroller-based designs.

Supervisors Replacement Considerations

Publicly confirmed substitutes include the 24LC024HT-E/SN from Microchip Technology. Verify electrical parameters and pinout compatibility before substitution.