CAT1640WI-30-G

Supervisors Overview

The CAT1640WI-30-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features an SOIC-8 surface-mount package and operates within a supply voltage range of 3 V to 5.5 V. The device monitors a single input with a fixed under-voltage threshold of 3 V and an over-voltage threshold of 3.15 V. It provides an active low, open-drain reset output with a standard reset delay time of 270 ms. The component supports manual reset functionality and lacks a watchdog timer or battery backup switch. It functions within a temperature range of -40°C to +85°C, drawing a typical operating current of 3 mA.

Supervisors Feature Summary

• Integrates precision voltage supervision with brown-out protection for microcontroller systems
• Provides active low open-drain reset signal when supply voltage falls below threshold
• Supports manual reset input for system control flexibility
• Designed for compact surface-mount integration in power management circuits

Supervisors Applications

• Microcontroller-based system power supervision
• CPU voltage monitoring and reset generation
• Brown-out protection in embedded electronics
• ASIC peripheral power management

Supervisors Procurement Notes

This component is listed as End-of-Life (EOL) by the manufacturer. Availability is restricted, and distributors may not stock this item in all regions. Verify current supply status and lead times carefully before design finalization. Consider alternative sourcing channels if immediate procurement is required, noting that legacy support may vary by supplier.

Supervisors Selection Notes

Select this part for applications requiring a fixed 3 V threshold supervisor in an SOIC-8 package. Ensure the system voltage remains within the 3 V to 5.5 V operational range. The absence of a watchdog timer necessitates external implementation if timing faults must be detected. Verify that the open-drain output interface is compatible with the target microcontroller's reset input logic levels.

Supervisors Part Context

The CAT1640 series belongs to onsemi's line of supervisory circuits combining memory and power management functions. This specific variant focuses on voltage supervision without integrated EEPROM storage, distinguishing it from other family members like the CAT1024 or CAT1641 which include serial memory interfaces. It serves as a dedicated power monitor for simple reset requirements.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is End-of-Life, engineers should consult official replacement guides or contact the manufacturer directly for recommended next-generation alternatives.