CAT1641WI-45-T3

Supervisors Overview

The CAT1641WI-45-T3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 2.7 V to 5.5 V and features a fixed threshold voltage of 4.5 V with an overvoltage threshold of 4.75 V. The device provides a manual reset input and utilizes an open-drain output configuration. It is housed in an 8-SOIC package and supports surface-mount installation. The component functions across a temperature range of -40°C to +85°C, drawing a typical operating current of 3 mA.

Supervisors Feature Summary

• Integrates a manual reset input for user-initiated system control
• Provides open-drain output capability for flexible logic interfacing
• Includes built-in power-on reset functionality with defined timeout characteristics

Supervisors Applications

• CPU voltage supervision in embedded systems
• Power management monitoring in industrial controllers
• System reset generation in consumer electronics

Supervisors Procurement Notes

Verify the specific suffix T3 for reel packaging requirements against your assembly line specifications. Confirm RoHS compliance status through official datasheets or manufacturer declarations prior to integration. Ensure the SOIC-8 footprint matches your PCB design constraints. Check for end-of-life notices or obsolescence warnings from onsemi to mitigate long-term supply risks.

Supervisors Selection Notes

Select this component when a fixed 4.5 V threshold is required for single-input voltage monitoring. The open-drain output suits designs needing wired-OR configurations or level shifting. Verify that the 3 mA quiescent current aligns with system power budgets. Consider the manual reset feature if external user intervention is necessary for system recovery.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits from onsemi. It shares functional similarities with other parts in the family but differs in package type and specific electrical thresholds. The WI suffix indicates wide-body SOIC packaging, while the 45 denotes the 4.5 V threshold variant. It serves as a dedicated power management IC for ensuring stable operation of digital logic.

Supervisors Replacement Considerations

CAT1641WI-45-GT3 is a verified substitute offering identical electrical characteristics and pinout compatibility. Both variants provide the same 4.5 V threshold and open-drain output in an 8-SOIC package. Verify tape-and-reel specifications when transitioning between T3 and GT3 suffixes to ensure automated handling compatibility.