CAT1641LI-45

Supervisors Overview

The CAT1641LI-45 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features a single monitored input with an active high, open-drain output type and includes manual reset functionality. The device operates within a supply voltage range of 3 V to 5.5 V, with a threshold voltage of 4.5 V and an overvoltage threshold of 4.75 V. It incorporates a reset delay time of 270 ms and draws a working supply current of 3 mA. The component is housed in a PDIP-8 package, supports through-hole installation, and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides voltage supervision with active high open-drain output for reliable signal interfacing
• Includes manual reset capability for controlled system recovery operations
• Integrates specific under-voltage and over-voltage detection thresholds for power integrity

Supervisors Applications

• CPU monitoring circuits requiring voltage supervision
• Embedded systems needing manual reset control
• Power management ICs for industrial or commercial electronics

Supervisors Procurement Notes

Verify component authenticity and condition carefully as the CAT1641LI-45 is listed as obsolete or discontinued by the manufacturer. Sourcing may involve third-party distributors or surplus stock rather than direct factory production. Confirm RoHS compliance status and check for any specific handling requirements associated with legacy inventory. Ensure the supplier provides traceable documentation to validate the part number and manufacturing origin before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a simple supervisory circuit with manual reset and active high output is required. It suits designs operating between 3 V and 5.5 V with a 4.5 V threshold. Consider alternatives if watchdog timers or battery backup switches are needed, as this model lacks those features. The PDIP-8 package is suitable for through-hole prototyping or low-volume production where surface-mount options are not mandatory.

Supervisors Part Context

This part belongs to the CAT1640/CAT1641 series of supervisory circuits from onsemi. These devices are categorized under PMIC - Power Management ICs and are specifically engineered for voltage monitoring tasks. The series typically offers various threshold voltages and output configurations to accommodate different system requirements while maintaining a compact footprint and low power consumption profile.

Supervisors Replacement Considerations

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