CAT1640WI-45

Supervisors Overview

The CAT1640WI-45 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates a 64K EEPROM with the supervisor functionality. The device operates within a supply voltage range of 3 V to 5.5 V and features a threshold voltage of 4.5 V. It provides an active low, open drain output with a reset delay time of 270 ms. The component supports manual reset input and lacks a watchdog timer or battery backup switch. It is housed in an SOIC-Wide-8 package and operates across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates 64K EEPROM memory with voltage supervision capabilities
• Provides active low open drain reset output signal
• Supports manual reset input functionality
• Operates within standard industrial temperature ranges

Supervisors Applications

• CPU power supply monitoring systems
• Embedded controller reset circuits
• Industrial control board supervision
• Consumer electronics power management

Supervisors Procurement Notes

Verify current availability status as this part may be discontinued or subject to limited distribution channels. Confirm exact package variant matches design requirements. Check RoHS compliance documentation for material composition details. Ensure replacement components meet identical electrical specifications if sourcing alternatives. Validate supplier authenticity through authorized onsemi distribution networks.

Supervisors Selection Notes

Select this component when integrated memory and supervision are required in a single package. Consider the 4.5V threshold for standard logic level monitoring. Evaluate the SOIC-Wide-8 footprint against PCB layout constraints. Assess the need for manual reset capability versus automatic operation only. Compare power consumption characteristics with alternative supervisors if efficiency is critical.

Supervisors Part Context

This device belongs to the CAT1640 series of supervisory circuits from onsemi. The series combines power management IC functions with non-volatile memory storage. Similar variants include CAT1640LI-45-G with different packaging options. The family targets applications requiring reliable system reset and data retention during power events.

Supervisors Replacement Considerations

CAT1640LI-45-G offers equivalent functionality in PDIP-8 packaging. Verify pin compatibility before substitution. Ensure EEPROM capacity remains sufficient for application needs. Confirm operating voltage ranges match system requirements.