CAT1161WI-30-GT3

Supervisors Overview

The CAT1161WI-30-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features an integrated 16K EEPROM and operates within a supply voltage range of 2.7 V to 6 V. The device monitors a single input with a threshold voltage of 3 V and includes a manual reset function alongside a watchdog timer. It provides active high, active low, and open drain outputs with a reset delay time of 270 ms. The component supports surface mount installation in an SOIC-8 package and functions across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates 16K EEPROM for data storage within the supervisory circuit
• Includes built-in watchdog timer functionality for system reliability
• Supports multiple output configurations including active high, active low, and open drain
• Features manual reset capability for user-initiated system control

Supervisors Applications

• CPU voltage supervision in embedded systems
• Microcontroller power management circuits
• Industrial control system monitoring
• Consumer electronics power integrity verification

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and material composition declarations prior to procurement. Check current lifecycle status as the product may be subject to discontinuation notices. Ensure packaging specifications match production requirements. Validate datasheet revisions against specific design needs.

Supervisors Selection Notes

Evaluate the 3 V threshold voltage against target system operating levels to ensure proper supervision timing. Consider the 270 ms reset delay duration relative to processor startup requirements. Assess the SOIC-8 package dimensions for PCB layout compatibility. Verify that the 3 mA operating current aligns with system power budget constraints. Confirm integration of the 16K EEPROM meets application data storage needs without requiring external memory components.

Supervisors Part Context

This component belongs to the CAT1161 series of voltage supervisory circuits from onsemi. The series focuses on providing comprehensive power management solutions with integrated non-volatile memory. The WI suffix indicates the wide-body SOIC package variant, while the GT3 designation specifies tape and reel packaging. This family targets applications requiring reliable CPU monitoring with minimal external component count.

Supervisors Replacement Considerations

CAT1161LI-28-G offers similar functionality with different package and threshold specifications. CAT1021WI-30-GT3 provides comparable supervision but with reduced 2K EEPROM capacity. CAT1162WI-45-T3 features a higher 4.5 V threshold and lacks watchdog functionality. Verify pinout compatibility and electrical parameter alignment before substituting any alternative part numbers.