QT113HA-ISG

Overview

The QT113HA-ISG is a charge-transfer touch sensor integrated circuit manufactured by Microchip Technology. It detects near-proximity or touch events through various dielectric materials such as glass, plastic, and wood. The device operates on a single supply voltage ranging from 2.5 V to 5 V with a typical current consumption of 600 µA. It features an active-high output signal and includes a HeartBeat health indicator. The component supports continuous autocalibration without manual adjustment and offers selectable auto-recalibration timeouts.

Feature Summary

• Projects a proximity sensing field through air and non-conductive dielectrics
• Converts small metal-bearing objects into intrinsic sensors
• Provides continuous self-calibration for stable operation over time
• Features an active-high output configuration for logic compatibility

Applications

• Elevator control buttons
• Appliance interface controls
• Security system access points
• Light switch implementations

Procurement Notes

Verify the specific suffix ISG indicates reel packaging when sourcing. Confirm the active-high output variant matches the design requirement, as alternative versions may feature active-low outputs. Ensure the selected component meets the required operating temperature range for the intended environment.

Selection Notes

Select this component when a simple, low-cost touch solution is needed that does not require complex microcontroller interfacing. The charge-transfer technology allows for sensing through thick cover plates. Consider the 600 µA supply current for battery-powered applications requiring extended operational life.

Part Context

This part belongs to the QT113 family of charge-transfer touch sensors. It is functionally similar to the QT113 but distinguished by its active-high output state. The series is designed for direct replacement of mechanical switches in consumer electronics and industrial control panels.

Replacement Considerations

The QT113HA-DSG is a documented equivalent offering identical functionality in a different package format. Verify pinout compatibility before substitution.