CAT1641WI42

Supervisors Overview

The CAT1641WI-42 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 reset delay time of 270 ms. The device monitors a single input with under-voltage thresholds at 3 V, 3.3 V, or 5 V, and an over-voltage threshold of 4.5 V. It provides active high and open drain outputs with manual reset capability. Packaged in SOIC-8, it functions between -40°C and +85°C with a quiescent current of 3 mA.

Supervisors Feature Summary

• Provides dedicated CPU supervision with integrated manual reset functionality
• Delivers dual output configurations including active high and open drain signals
• Monitors power rails for both under-voltage and over-voltage conditions

Supervisors Applications

• CPU power supply monitoring systems
• Embedded controller reset circuits
• Voltage supervision in industrial control units

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part may be discontinued. Confirm package integrity and pin alignment against the SOIC-8 specification. Ensure operating temperature ranges match system requirements. Check RoHS compliance documentation for regulatory adherence. Validate electrical parameters against the official datasheet before integration.

Supervisors Selection Notes

Select this component when precise voltage supervision for microprocessors is required. The fixed thresholds suit standard logic levels. Consider the 270 ms delay for stable startup sequences. The SOIC-8 package facilitates surface mount assembly. Evaluate the 3 mA current consumption against power budget constraints.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits from onsemi. It shares functional similarities with other variants like the CAT1641WI-30 but differs in specific threshold voltages. The series focuses on reliable power management for digital logic components without complex watchdog features.

Supervisors Replacement Considerations

CAT1641WI-30-G offers similar supervision with different threshold settings. Verify pin compatibility and electrical specifications before substitution.