CAT1641YI-28-GT3

Supervisors Overview

The CAT1641YI-28-GT3 is a voltage supervisory circuit manufactured by onsemi, housed in an 8-pin TSSOP package. It integrates a CPU supervisor with a 64K-bit I2C serial CMOS EEPROM. The device monitors a single input and features a manual reset capability without a watchdog timer. It operates within a supply voltage range of 3 V to 5.5 V, with an undervoltage threshold between 4.25 V and 4.5 V. The reset delay time is specified at 5 µs. Power consumption includes a working current of 1 mA or 3 mA and a power dissipation of 1 W. It supports open collector/drain output types and functions across temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Integrates CPU voltage supervision with non-volatile data storage
• Supports I2C serial communication for memory access
• Provides manual reset functionality with open drain output

Supervisors Applications

• Embedded systems requiring combined monitoring and configuration storage
• Industrial control units needing reliable power supervision
• Consumer electronics with limited board space for integrated solutions

Supervisors Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeits. Confirm RoHS compliance status via official documentation before integration. Check for obsolescence notices as this part may be discontinued. Ensure ESD protection measures are applied during handling. Validate pinout compatibility with existing PCB layouts prior to procurement.

Supervisors Selection Notes

Select this component when both power supervision and persistent data storage are required in a compact form factor. The I2C interface allows flexible system integration. Consider the specific undervoltage threshold requirements against the available options. Evaluate the operating temperature range against environmental conditions. Assess the need for manual reset versus automatic power-on reset behaviors.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits with embedded EEPROM. It serves as a combined solution for system monitoring and configuration management. The series offers various voltage thresholds and package options. It targets applications where space constraints prevent separate supervisor and memory chips. The I2C interface ensures standard connectivity with microcontrollers.

Supervisors Replacement Considerations

• CAT1641YI-30-GT3
• CAT1641WI-28-T3

Supervisors FAQ

Does the CAT1641YI-28-GT3 include a watchdog timer?

No, this specific model does not feature a watchdog timer; it provides only manual reset and power-on reset capabilities.

What is the memory capacity of the integrated EEPROM?

The device contains a 64K-bit (8K x 8) I2C serial CMOS EEPROM for data storage.