CAT1641WI-25-GT3

Supervisors Overview

The CAT1641WI-25-GT3 is a supervisory circuit manufactured by onsemi, featuring an integrated 64K CMOS EEPROM with I2C serial interface. It monitors a single input channel and provides an open-drain or open-collector output. The device operates within a supply voltage range of 3 V to 5.5 V and supports manual reset functionality. It is designed for surface-mount installation in TSSOP-8 packages, ensuring reliable performance across industrial temperature ranges.

Supervisors Feature Summary

• Integrates a 64K CMOS EEPROM accessible via the I2C serial interface for non-volatile data storage alongside system monitoring capabilities.
• Provides active-low reset output with configurable thresholds to ensure stable power-up sequencing and fault detection.
• Supports manual reset input allowing external control over the reset state for system initialization or recovery.

Supervisors Applications

• Embedded systems requiring combined voltage supervision and persistent configuration storage
• Industrial control units needing reliable power monitoring and data retention
• Consumer electronics utilizing low-voltage microcontrollers with I2C peripherals

Supervisors Procurement Notes

Verify the specific suffix '25' against the manufacturer's current datasheet to confirm the exact undervoltage lockout threshold and reset timing characteristics. Ensure the I2C address configuration matches your system design requirements. Confirm package availability and lead times directly with authorized distributors as inventory levels fluctuate.

Supervisors Selection Notes

Select this component when a single-supervisor solution must also provide non-volatile memory access via I2C. It is suitable for designs where board space is limited and integrating separate EEPROM and supervisor ICs is undesirable. Verify that the required reset delay and threshold voltages align with the target microcontroller's power-on specifications.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits from onsemi, which combine voltage monitoring with embedded EEPROM. The series is designed to simplify system design by reducing component count. The WI-25 variant specifically denotes the I2C interface and particular electrical characteristics defined by the manufacturer for this product line.

Supervisors Replacement Considerations

Direct substitutes include other CAT1641 variants such as CAT1641YI-42-GT3 or CAT1641WI-30-GT3, provided the reset thresholds and I2C compatibility match the application requirements. Cross-referencing pinouts and electrical specifications with the official datasheet is essential before substitution.