CAT1640WI-30

Supervisors Overview

The CAT1640WI-30 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 fixed under-voltage threshold of 3 V with an over-voltage threshold of 3.15 V. The device provides a manual reset function and delivers a reset delay time of 270 ms. It supports active low and open drain output configurations while consuming a maximum operating current of 3 mA. The component is housed in an SOIC-Wide-8 surface-mount package and is rated for industrial temperature operation from -40°C to +85°C.

Supervisors Feature Summary

• Provides hardware-based voltage supervision with dedicated under-voltage and over-voltage detection thresholds.
• Includes a manual reset input allowing external control over the system reset state.
• Features an open-drain output configuration compatible with various logic families.

Supervisors Applications

• CPU power supply monitoring
• Microcontroller reset circuits
• Embedded system voltage supervision

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer. Check for any recent product change notices that may affect pinout or electrical characteristics before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a single-channel voltage supervisor with manual reset capability is required. Ensure the 3 V threshold aligns with the monitored rail voltage. Verify that the SOIC-Wide-8 package fits the PCB layout constraints. Consider the 270 ms reset delay duration relative to the target processor's startup requirements.

Supervisors Part Context

This part belongs to the CAT1640 series of supervisory circuits from onsemi. The series focuses on providing reliable power management protection for digital systems. The WI suffix typically denotes the wide-body SOIC package option, distinguishing it from standard narrow packages or through-hole variants within the same functional family.

Supervisors Replacement Considerations

Check for direct cross-reference part numbers from onsemi or other manufacturers offering identical 3 V threshold supervisors in SOIC-8 packages. Verify that replacement devices maintain the same manual reset functionality and output drive capabilities to ensure circuit compatibility without redesign.