CAT140089SWI-GT3

Supervisors Overview

The CAT140089SWI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring power supply integrity in electronic systems. It operates within a supply voltage range of 2.5 V to 5.5 V and features an SOIC-8 surface-mount package. The device supports standard and fast I²C protocols with a 2 kbit EEPROM capacity. Key electrical parameters include a maximum operating current of 1 mA and threshold voltages of 2.5 V, 3 V, 3.3 V, and 5 V. Specific thresholds are defined with an overvoltage limit of 2.96 V and an undervoltage limit of 2.89 V. It functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides precise monitoring of system power supply voltages
• Integrates 2 kbit EEPROM supporting standard and fast I²C communication protocols
• Ensures reset signal validity at low supply voltages down to 1 V
• Configurable output polarity for high or low active reset signals

Supervisors Applications

• 5V system power supervision
• 3.3V system power supervision
• 3V system power supervision
• 2.5V system power supervision

Supervisors Procurement Notes

Verify component authenticity through authorized distribution channels due to discontinuation status. Confirm RoHS compliance details via official documentation. Validate package type as SOIC-8 and interface compatibility with I²C controllers. Check thermal specifications against application requirements. Ensure replacement strategies account for end-of-life manufacturing constraints.

Supervisors Selection Notes

Select this component for applications requiring integrated voltage supervision and non-volatile data storage. Evaluate I²C bus speed compatibility with existing system controllers. Consider the single-input monitoring capability for dedicated rail protection. Assess package size constraints against available PCB real estate. Verify operating temperature range suitability for the intended environment.

Supervisors Part Context

This part belongs to the CAT1400xx series of supervisory circuits from onsemi. It combines voltage monitoring functionality with embedded memory, distinguishing it from basic supervisors. The series targets industrial and consumer electronics requiring reliable power management. Integration reduces component count by combining supervision and storage in a single package.

Supervisors Replacement Considerations

Publicly confirmed substitute: TPS3705-33DR (Texas Instruments). Verify functional equivalence regarding voltage thresholds and interface protocols before implementation.