CAT1161WI25

Supervisors Overview

The CAT1161WI-25-T3 is a supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It integrates an I2C serial CMOS EEPROM with 16K capacity, a precision reset controller, and a watchdog timer. The device operates within a supply voltage range of 2.7 V to 6 V, featuring a threshold voltage of 2.5 V. It provides active high, active low, and open drain outputs with a manual reset capability. The component supports a reset delay time of 270 ms and functions at temperatures between -40°C and +85°C. It is housed in an SOIC-Wide-8 package.

Supervisors Feature Summary

• Integrates 16K I2C serial CMOS EEPROM for data storage alongside supervisory functions
• Includes precision reset controller with configurable output types including active high, active low, and open drain
• Features manual reset capability and watchdog timer functionality for system reliability

Supervisors Applications

• CPU supervision in embedded systems
• Data retention using integrated EEPROM
• Industrial control systems requiring voltage monitoring

Supervisors Procurement Notes

Verify the exact suffix (e.g., T3) as it denotes specific packaging or tape-and-reel configurations. Confirm end-of-life status with the manufacturer, as this part may be discontinued. Ensure compatibility with existing I2C bus protocols and voltage levels before integration into new designs.

Supervisors Selection Notes

Select this component when both voltage supervision and non-volatile data storage are required in a single package. Consider the SOIC-Wide-8 package for surface mount assembly. Verify that the 2.5 V threshold aligns with the target system's power rail requirements and that the operating temperature range meets environmental specifications.

Supervisors Part Context

This part belongs to the CAT1161 family of supervisory circuits from onsemi. These devices combine power management monitoring with memory capabilities, simplifying board design by reducing component count. The family typically includes variants with different voltage thresholds and package options to suit various industrial and commercial applications.

Supervisors Replacement Considerations

Check for direct pin-compatible substitutes within the CAT1161 series with adjusted voltage thresholds. Verify if newer generations from onsemi offer equivalent functionality with updated packaging or enhanced features.