CAT1641WI-25-T3

Supervisors Overview

The CAT1641WI-25-T3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 3 V to 5.5 V and features a threshold voltage of 2.5 V. The device monitors one input and provides an active high reset signal with a minimum timeout of 130 ms. It includes manual reset capability and lacks a watchdog timer. Operating temperatures span from -40°C to +85°C. The component is housed in an 8-SOIC package and consumes 3 mA of working power current.

Supervisors Feature Summary

• Provides active high reset output for reliable system supervision
• Includes manual reset functionality for user-initiated control
• Features open drain or open collector output configuration

Supervisors Applications

• CPU power supply monitoring
• Voltage supervisory circuits
• Power management ICs

Supervisors Procurement Notes

Verify the specific suffix T3 indicates reel packaging when sourcing. Confirm RoHS compliance status through official documentation before integration. Check for end-of-life notices as availability may be limited. Ensure the SOIC-8 package dimensions match your PCB footprint requirements. Validate the 2.5 V threshold aligns with your target supply rail.

Supervisors Selection Notes

Select this component when an active high reset signal is required for systems operating between 3 V and 5.5 V. The 130 ms minimum reset timeout ensures stable power-up sequences. The open drain output allows flexibility in interfacing with various logic levels. Manual reset support adds operational versatility for testing and maintenance scenarios.

Supervisors Part Context

This part belongs to the CAT1641 series of voltage supervisors from onsemi. It falls under the broader category of power management integrated circuits. The device is specifically engineered for standard product applications requiring reliable voltage monitoring. It shares architectural similarities with other parts in the CAT10xx and CAT13xx families but offers distinct reset polarity options.

Supervisors Replacement Considerations

CAT1021WI-25-T3: Similar supervisor with different reset polarity. CAT1320WI-25-T3: Includes additional memory features. Verify pin compatibility and reset timeout specifications before substitution.