CAT811ZTBI-GT3

Supervisors Overview

The CAT811ZTBI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring single power supply inputs. It features an active low, push-pull output and includes a manual reset input. The device operates within a supply voltage range of 1.2 V to 5.5 V, with a specific threshold voltage of 2.32 V and an overvoltage threshold of 2.35 V. It provides a fixed reset delay time of 240 ms. The component is housed in a SOT-143-4 surface-mount package and supports operation temperatures from -40 °C to +85 °C. Quiescent current is specified at 8 µA, with maximum power dissipation of 320 mW.

Supervisors Feature Summary

• Provides precise voltage supervision with dedicated manual reset functionality for controlled system recovery.
• Features an active low push-pull output stage compatible with standard digital logic interfaces.
• Operates with ultra-low quiescent current consumption suitable for battery-powered applications.

Supervisors Applications

• Microprocessor power supply monitoring
• Battery backup switching circuits
• Portable electronic device power management

Supervisors Procurement Notes

Verify the exact suffix designation against official onsemi documentation to confirm threshold voltage specifications, as variations exist within the CAT811 family. Confirm end-of-life status and lead times through authorized distributors, as availability may be restricted. Ensure compatibility with SOT-143-4 footprint requirements during PCB layout verification.

Supervisors Selection Notes

Select this component when a specific low-voltage threshold near 2.32 V is required for single-channel supervision. Consider the manual reset feature if external user intervention or specific sequencing is needed. Evaluate the operating temperature range and package constraints against application environmental conditions before finalizing the design.

Supervisors Part Context

This part belongs to the CAT811 series of microprocessor power supply supervisors. The series offers various threshold voltages and output configurations to suit different system requirements. The ZTBI suffix indicates specific electrical characteristics including the 2.32 V threshold and active low output type within the standardized SOT-143-4 package format.

Supervisors Replacement Considerations

Direct substitutes include other CAT811 variants with matching thresholds such as CAT811RTBI-GT3 or CAT811STBI-GT3, provided their specific threshold voltages align with the design requirements. Cross-reference datasheets to ensure identical pinout and functional behavior before substitution.