CAT1640YI-42

Supervisors Overview

The CAT1640YI-42 is a voltage supervisory circuit manufactured by onsemi, housed in an 8-TSSOP surface-mount package. It monitors a single input voltage with a maximum supply voltage of 5.5 V and operates within a temperature range of -40°C to +85°C. The device features an open collector/drain output type and includes manual reset functionality. It integrates a 64K CMOS EEPROM accessible via I2C serial interface. Key electrical parameters include a reset delay time of 5 µs and undervoltage thresholds ranging from 4.25 V to 4.5 V.

Supervisors Feature Summary

• Integrates a 64K CMOS EEPROM for non-volatile data storage accessible through the I2C serial interface.
• Provides voltage supervision with manual reset capability and open collector/drain output configuration.
• Designed for surface-mount installation in compact electronic systems.

Supervisors Applications

• CPU supply monitoring in embedded systems
• Industrial control circuits requiring voltage supervision
• Consumer electronics with limited board space

Supervisors Procurement Notes

Verify component authenticity and datasheet revision status before integration. Confirm that the obsolete product status does not conflict with long-term availability requirements. Ensure design compatibility with the 8-TSSOP package dimensions and thermal characteristics specified in official documentation.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and small EEPROM are required in a single package. The fixed threshold range and manual reset feature suit applications where simple power management is sufficient. Consider the operating temperature range and package size constraints during initial design phases.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits. It shares functional similarities with other devices in the family but differs in specific EEPROM capacity and threshold configurations. The series is categorized under PMIC and standard products designed for reliable operation in industrial and consumer environments.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify cross-references with manufacturer documentation or authorized distributors for potential alternatives.