CAT1641LI-28-G

Supervisors Overview

The CAT1641LI-28-G is a voltage supervisory circuit manufactured by onsemi, designed for CPU monitoring applications. It features a single monitored input with an active high reset output and manual reset capability. The device operates within a supply voltage range of 3 V to 5.5 V, with a threshold voltage of 2.85 V. It provides a reset timeout of 130 ms minimum and includes an open drain or open collector output type. The component is housed in an 8-PDIP package suitable for through-hole mounting and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides voltage supervision for CPU systems with manual reset functionality
• Features active high reset output with open drain or open collector configuration
• Operates within standard industrial temperature ranges for reliable performance

Supervisors Applications

• CPU power supply monitoring
• Voltage supervision in embedded systems
• Industrial control circuit protection

Supervisors Procurement Notes

Verify current availability status as the component may be discontinued or subject to limited distribution channels. Confirm RoHS compliance details and specific ordering suffixes if required for environmental regulations. Check for alternative packages such as SOIC variants if surface mount integration is necessary for the design. Ensure compatibility with existing PCB footprints before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a through-hole supervisor with manual reset is required for low-voltage CPU monitoring. The 2.85 V threshold suits 3.3 V logic systems. Consider the 8-PDIP package constraints for board layout. Verify that the open drain output aligns with the downstream logic interface requirements. Evaluate thermal dissipation capabilities within the specified operating temperature range.

Supervisors Part Context

This part belongs to the CAT1641 series of supervisory circuits from onsemi. It shares functional similarities with other parts in the family but differs in package type and specific threshold voltages. The LI suffix indicates a leaded DIP package variant. Related models include CAT1641WI-30-G for surface mount applications and CAT1641LI-30-G for different voltage thresholds.

Supervisors Replacement Considerations

Direct substitutes include CAT1641LI-30-G for similar DIP packaging with adjusted thresholds. For surface mount needs, consider CAT1641WI-30-G. Verify pinout compatibility and electrical specifications before substitution. No other public confirmed substitute part numbers are available.