CAT809HTBI-GT3

Supervisors Overview

The CAT809HTBI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed to monitor power supply voltages in digital systems. It features an active low push-pull output and operates within a supply voltage range of 1.2 V to 5.5 V. The device has a threshold voltage of 4.55 V and monitors four inputs. It consumes 6 uA of operating current and dissipates up to 320 mW of power. The component is housed in a SOT-23-3 package and supports surface mount installation. It functions within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Monitors multiple power supply rails with a single device
• Provides active low push-pull reset signal output
• Operates with low quiescent current consumption
• Compatible with standard industrial temperature ranges

Supervisors Applications

• Digital system power supply monitoring
• Industrial control circuits
• Consumer electronics power management
• Embedded system reset generation

Supervisors Procurement Notes

Verify the exact suffix GT3 against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Confirm that the HTBI variant corresponds to the 4.55 V threshold and four-input configuration as listed in the datasheet. Check for any recent product change notices or certification suspensions affecting this specific part number before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a multi-rail supervision solution is required in a compact SOT-23-3 footprint. Ensure the application voltage stays within the 1.2 V to 5.5 V operational range. Verify that the 4.55 V threshold aligns with the specific rail being monitored. Consider the 6 uA current draw for battery-sensitive designs requiring minimal standby power consumption.

Supervisors Part Context

This part belongs to the CAT809 series of voltage supervisors from onsemi. The series offers various threshold options and input configurations to support different system architectures. The CAT809 family is designed to replace older equivalents like the MAX809 in industrial applications, providing reliable reset signals under varying power conditions.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult the official onsemi datasheet for cross-reference information or contact the manufacturer directly for approved alternatives.