CAT872-25ULGT3

Supervisors Overview

The CAT872-25ULGT3 is a processor supervisor circuit manufactured by onsemi. It functions as a dual input reset generator designed to restart microprocessor and microcontroller-based systems when watchdog timers or other resetting mechanisms become disabled or fail. The device features an active low output with an open-drain configuration, providing reliable system supervision in dual supply applications.

Supervisors Feature Summary

• Dual input reset generation for enhanced system reliability
• Active low open-drain output interface
• Designed to recover systems from failed reset mechanisms

Supervisors Applications

• Microprocessor system supervision
• Microcontroller-based system recovery
• Dual power supply voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix ULGT3 against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the dual-input requirement matches the target design architecture. Cross-reference the part number with official onsemi documentation to validate availability and manufacturing status before procurement.

Supervisors Selection Notes

Select this component when dual independent voltage rails require simultaneous supervision. The open-drain output allows for flexible interfacing with various logic families. Verify that the threshold voltage corresponds to the monitored rail levels. Confirm compatibility with the system's reset timing requirements.

Supervisors Part Context

This part belongs to the CAT871/CAT872 family of supervisory circuits. These devices are engineered for embedded systems requiring robust fault detection. The series supports multiple voltage thresholds and package options to accommodate diverse board space and power constraints in industrial and consumer electronics.

Supervisors Replacement Considerations

Check for CAT871 variants if single-input supervision suffices. Verify pinout compatibility with existing PCB layouts. Confirm electrical parameters match the original design specifications.