CAT1641YI-45-T3

Supervisors Overview

The CAT1641YI-45-T3 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 5.5 V and features a fixed under-voltage threshold of 4.5 V with an over-voltage threshold of 4.75 V. The device provides a manual reset function and utilizes an open-drain output type. It is housed in an 8-pin TSSOP package and supports surface-mount installation. The component functions across a temperature range of -40°C to +85°C, drawing a typical operating current of 3 mA.

Supervisors Feature Summary

• Integrated CPU supervision with manual reset capability
• Dual threshold detection for under-voltage and over-voltage conditions
• Open-drain output configuration for flexible interfacing

Supervisors Applications

• CPU power supply monitoring
• Embedded system voltage supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the exact suffix 'T3' corresponds to the tape-and-reel packaging format required for your assembly line. Confirm that the 'YI' designation aligns with the specific industrial temperature grade and package variant needed for your design. Cross-reference the manufacturer part number against the latest obsolescence notices to ensure long-term availability or identify suitable end-of-life alternatives.

Supervisors Selection Notes

Select this component when a single-channel supervisor with manual reset is required for systems operating between 2.7 V and 5.5 V. Ensure the application demands a 4.5 V trip point for under-voltage protection. Verify that the TSSOP-8 package fits the PCB footprint constraints and that the open-drain output compatibility matches the downstream logic levels.

Supervisors Part Context

This part belongs to the CAT1641 series of voltage supervisors from onsemi. These devices are engineered for reliable power management in microprocessor-based systems. The series typically offers various threshold options and package styles to accommodate different design requirements while maintaining consistent performance characteristics for critical voltage monitoring tasks.

Supervisors Replacement Considerations

Check for direct pin-compatible substitutes within the CAT1641 family that may offer updated packaging or availability. Consult onsemi documentation for any recommended cross-references if this specific revision is discontinued.