CAT863TTBI-GT3

Supervisors Overview

The CAT863TTBI-GT3 is a voltage supervisory circuit manufactured by onsemi, designed for monitoring power supply rails in electronic systems. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed threshold voltage of 3.08 V with an overvoltage threshold of 3.11 V. The device provides an active low, open-drain output and includes a reset delay time of 240 ms. It consumes a maximum operating supply current of 6 uA and dissipates up to 320 mW. The component is housed in a SOT-23-3 surface-mount package and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides continuous monitoring of single-channel power supply voltages to ensure system stability.
• Generates a reset signal via an active low, open-drain output when input voltage deviates from specified thresholds.
• Incorporates a fixed internal reset delay timer to prevent false triggering during transient power events.

Supervisors Applications

• Monitoring microprocessor power supply rails
• Embedded system voltage supervision
• Industrial control unit power integrity checks

Supervisors Procurement Notes

Verify the specific suffix GT3 confirms tape-and-reel packaging configuration prior to ordering. Confirm that the 3.08 V threshold aligns with target rail requirements. Check current lifecycle status as end-of-life notifications may affect long-term availability. Ensure SOT-23-3 footprint compatibility with existing PCB layout constraints.

Supervisors Selection Notes

Select this component when a fixed 3.08 V threshold is required for single-rail supervision. Consider the 6 uA quiescent current for low-power applications. Verify that the open-drain output interface matches the receiving logic inputs. Evaluate the 240 ms delay against system startup timing requirements.

Supervisors Part Context

This part belongs to the CAT863 series of voltage supervisors from onsemi. It is categorized under PMIC - Power Management ICs. The device serves as a dedicated reset controller for digital circuits requiring reliable power-on reset functionality without manual intervention or watchdog features.

Supervisors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other onsemi voltage supervisors sharing identical threshold and package specifications if direct substitution is necessary.