CAT1640YI-42-GT3

Supervisors Overview

The CAT1640YI-42-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU supervision with an integrated 64K CMOS EEPROM. It operates within a supply voltage range of 3 V to 5.5 V and features a fixed under-voltage threshold of 4.25 V to 4.5 V. The device provides an open collector/drain output with a manual reset capability and a reset delay time of 5 µs. It does not include a watchdog timer. The component is housed in an 8-TSSOP package and supports industrial operating temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a 64K serial EEPROM for non-volatile data storage alongside power monitoring functions
• Provides manual reset control with active low output signaling
• Supports I2C serial communication interface for configuration and data access

Supervisors Applications

• CPU system supervision in embedded controllers
• Data logging applications requiring persistent memory storage
• Industrial control systems requiring reliable power monitoring

Supervisors Procurement Notes

Verify current availability status as the part may be subject to end-of-life or obsolescence notices. Confirm that the TSSOP-8 package and specific threshold voltage match your design requirements. Ensure compatibility with existing I2C bus protocols and check for any alternative components if production continuity is critical.

Supervisors Selection Notes

Select this component when both power supervision and non-volatile memory storage are required in a single package. The fixed 4.25V–4.5V threshold suits standard 5V logic systems. Consider the 8-TSSOP footprint for space-constrained PCB layouts. Verify that the absence of a watchdog timer aligns with the system's safety architecture.

Supervisors Part Context

This part belongs to the CAT1641/CAT1640 series of supervisory circuits with EEPROM. It shares functional similarities with other parts in the family but differs in EEPROM capacity and specific threshold voltages. The '42' suffix indicates the specific under-voltage detection level, distinguishing it from variants with different trip points.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official onsemi resources for cross-reference information or verify compatibility with similar supervisory ICs featuring integrated EEPROM.