CAT1640YI-28-GT3

Supervisors Overview

The CAT1640YI-28-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor system power integrity. It operates within a supply voltage range of 2.7 V to 5.5 V and features a fixed threshold voltage of 2.8 V for under-voltage detection. The device provides manual reset capability and includes an integrated watchdog timer to ensure system reliability. It is housed in an 8-TSSOP surface-mount package and supports operation across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrated watchdog timer functionality for automated system recovery
• Manual reset input for user-initiated system control
• Single-channel voltage monitoring with fixed threshold detection

Supervisors Applications

• CPU and microprocessor reset circuits
• Portable battery-powered equipment supervision
• Industrial control system power monitoring

Supervisors Procurement Notes

Verify the specific suffix 'GT3' against current manufacturer documentation to confirm packaging and tape-and-reel specifications. Confirm RoHS compliance status through official datasheets or environmental reports. Check for any recent Product Change Notifications (PCN) regarding pinout or electrical parameter updates before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 2.8 V threshold is required for single-supply monitoring. Ensure the application demands both manual reset inputs and watchdog timer integration. Verify that the 8-TSSOP package fits the PCB layout constraints and that the operating temperature range meets the environmental requirements of the target deployment scenario.

Supervisors Part Context

This part belongs to the CAT1640 series of supervisory circuits from onsemi. The series focuses on providing reliable voltage monitoring and reset generation for embedded systems. The '28' designation indicates the specific under-voltage threshold voltage level, distinguishing it from other variants in the family with different trip points.

Supervisors Replacement Considerations

Consult official cross-reference guides for direct replacements. Verify that substitute parts match the 2.8 V threshold, TSSOP-8 package, and include both manual reset and watchdog features.