CAT1163WI-45-T3

Supervisors Overview

The CAT1163WI-45-T3 is a CPU supervisory circuit manufactured by onsemi, designed to monitor voltage levels and provide reset signals for microprocessor systems. It integrates a 16K EEPROM for data storage within the same package. The device operates with a single monitored input and features a threshold voltage of 4.5 V, with an overvoltage threshold of 4.75 V. It supports active high, active low, and open drain output types, includes manual reset capability, and incorporates a watchdog timer. The reset delay time is specified at 270 ms, and the maximum supply voltage is 6 V. Operating current is 3 mA, with a power dissipation of 1 W. The component functions within a temperature range of -40°C to +85°C and is housed in an SOIC-Wide-8 surface-mount package.

Supervisors Feature Summary

• Integrates 16K EEPROM for non-volatile data storage alongside supervisory functions
• Provides configurable output types including active high, active low, and open drain configurations
• Includes built-in watchdog timer functionality for system reliability monitoring
• Supports manual reset input for user-initiated system control

Supervisors Applications

• CPU supervisor circuits requiring integrated data storage
• Systems needing watchdog timer protection
• Voltage monitoring applications with specific threshold requirements

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices since the product lifecycle status may affect long-term availability. Ensure packaging specifications match project requirements for surface-mount assembly processes.

Supervisors Selection Notes

Select this component when both voltage supervision and persistent data storage are required in a single IC. Consider the 4.5 V threshold suitability for the target system voltage rails. Evaluate the SOIC-Wide-8 package dimensions against PCB layout constraints. Verify that the 270 ms reset delay aligns with system startup timing requirements.

Supervisors Part Context

This part belongs to the CAT1163 series of supervisory circuits from onsemi, which combines voltage monitoring with embedded memory capabilities. The series is designed for applications where space efficiency and data retention during power events are critical. The WI suffix indicates wide-body packaging, and T3 denotes tape-and-reel packaging format.

Supervisors Replacement Considerations

Check for CAT1163 variants with different voltage thresholds if system rail voltages differ. Consider CAT1162 series if EEPROM storage is not required. Verify pin compatibility before substituting with other supervisory ICs.