CAT1640ZD2GI-45

Supervisors Overview

The CAT1640ZD2GI-45 is a supervisory circuit manufactured by onsemi, integrating a voltage supervisor with a 64K I2C serial EEPROM. It operates within a supply voltage range of 3 V to 5.5 V and features an under-voltage threshold of 4.5 V. The device provides a reset delay time of 270 ms and utilizes an active low, open drain output. It is housed in an 8-TDFN (3x4.9) package and supports manual reset functionality without a watchdog timer or battery backup switch.

Supervisors Feature Summary

• Integrates a single-channel voltage supervisor with a 64K I2C serial EEPROM for combined monitoring and data storage.
• Provides reliable system reset via an active low open drain output triggered by under-voltage conditions.
• Supports manual reset input for controlled system initialization independent of power supply status.

Supervisors Applications

• CPU monitoring systems requiring integrated non-volatile memory
• Industrial control units needing voltage supervision and configuration storage
• Embedded devices utilizing I2C communication for system management

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part may be subject to obsolescence notices. Confirm RoHS compliance status and specific manufacturing lot details prior to procurement. Ensure compatibility with existing PCB footprints for the 8-TDFN package. Request updated lifecycle documentation from onsemi to assess long-term availability risks.

Supervisors Selection Notes

Select this component when both voltage supervision and persistent data storage are required in a single package. The 4.5 V threshold suits standard 5 V logic systems. Consider the 8-TDFN package size for space-constrained designs. Verify I2C address configurations if multiple devices share the bus. Evaluate thermal performance within the specified operating temperature range.

Supervisors Part Context

This part belongs to the CAT1640 series of supervisory circuits with embedded EEPROM. It shares functional similarities with other variants like CAT1640LI-45-G but differs in package type and interface integration. The series is designed for applications requiring robust power management and data retention capabilities in compact form factors.

Supervisors Replacement Considerations

CAT1640ZD2GI-30 offers similar functionality with a different voltage threshold. CAT1640WI-30-G provides surface mount options with varying thresholds. Verify pinout compatibility and I2C interface requirements before substituting with these alternatives.

Supervisors FAQ

What is the reset delay time for the CAT1640ZD2GI-45?

The reset delay time is 270 ms, ensuring stable operation before asserting the reset signal.

Does the CAT1640ZD2GI-45 include a watchdog timer?

No, the device does not include a watchdog timer; it focuses on voltage supervision and EEPROM storage.