CAT1163WI28

Supervisors Overview

The CAT1163WI-28-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It operates within a supply voltage range of 2.7 V to 6 V and features a threshold voltage of 2.8 V with an overvoltage threshold of 3 V. The device includes a manual reset input, a watchdog timer, and offers active high, active low, or open drain output types. It provides a reset delay time of 270 ms and consumes 3 mA of operating current. Packaged in an SOIC-8 format, it supports industrial temperature ranges from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system reliability monitoring
• Provides flexible output configurations including active high, active low, and open drain options
• Includes manual reset capability for user-initiated system control

Supervisors Applications

• CPU voltage supervision in embedded systems
• Microcontroller reset management
• Industrial control board power monitoring

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part status may be discontinued. Confirm package variant (SOIC-8 vs SOIC-Wide-8) and suffix codes match design requirements. Check RoHS compliance documentation for specific manufacturing dates. Ensure thermal dissipation limits are respected in final PCB layout design.

Supervisors Selection Notes

Select this component when a single-channel supervisor with integrated watchdog functionality is required. Compare threshold voltages against target rail stability. Consider the 270 ms reset delay duration relative to processor startup times. Evaluate the open drain option if level shifting or wired-OR logic is needed in the circuit design.

Supervisors Part Context

This part belongs to the CAT1163 series of supervisory circuits from onsemi. It shares functional similarities with other variants differing primarily in threshold voltage settings and packaging styles. The series is categorized under PMIC voltage supervisors, targeting reliable operation in digital logic environments requiring precise power management oversight.

Supervisors Replacement Considerations

Check for direct pin-compatible substitutes within the same manufacturer family that offer adjusted threshold voltages. Verify equivalent watchdog timeout specifications and reset delay characteristics before substitution.