CAT140029TWI-GT3

Supervisors Overview

The CAT140029TWI-GT3 is a Voltage Supervisory Circuit manufactured by onsemi, housed in an SOIC-8 surface-mount package. It integrates a voltage supervisor with a 2-kbit I2C Serial CMOS EEPROM. The device operates within a supply voltage range of 2.5 V to 5.5 V and features a quiescent current of 1 mA. It monitors a single input without manual reset or watchdog timer capabilities. Threshold voltages include options for 2.5 V, 3 V, 3.3 V, and 5 V, with specific over-voltage and under-voltage thresholds documented at 3.11 V and 3.04 V respectively. The component supports an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates voltage supervision functionality with non-volatile data storage via I2C serial interface
• Provides configurable threshold monitoring for power rail integrity
• Supports standard I2C communication protocols for system configuration

Supervisors Applications

• Embedded systems requiring power monitoring and configuration storage
• Industrial control units needing reliable voltage supervision
• Consumer electronics utilizing I2C-based configuration management

Supervisors Procurement Notes

Verify the exact suffix and manufacturer designation when sourcing, as legacy Catalyst branding may appear in older documentation. Confirm availability status as distribution channels may list this item as discontinued or limited stock. Ensure the I2C address and EEPROM capacity match system requirements before procurement. Cross-reference RoHS compliance details with the latest manufacturer announcements.

Supervisors Selection Notes

Select this component when both voltage supervision and persistent configuration storage are required in a single package. The I2C interface allows for flexible threshold adjustments during operation. Consider the SOIC-8 footprint for PCB layout compatibility. Verify that the operating voltage range aligns with the target system's power rails. Evaluate the need for manual reset or watchdog features against alternative supervisory ICs if those functions are critical.

Supervisors Part Context

This part belongs to the CAT1400xx series of supervisory circuits with integrated memory. Similar variants exist with different EEPROM capacities, such as the CAT140049TWI-GT3 which offers 8k bits. The series is designed for applications requiring robust power management and data retention in compact packages. Manufacturer transitions from Catalyst to onsemi may affect part numbering conventions.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.