QT113H-D

Overview

The QT113H-D is a single-channel capacitive touch sensor IC from Microchip Technology's QProx series, designed for detecting near-proximity or touch events. It operates within a supply voltage range of 2.5V to 5.5V and draws a typical supply current of 600µA. The device features a 14-bit resolution for precise sensing capabilities. It is housed in an 8-DIP package with dimensions of 0.300 inches (7.62mm) width, suitable for through-hole mounting. The component supports an operating temperature range of 0°C to 70°C.

Feature Summary

• Capacitive touch and proximity detection capability
• Self-contained digital integrated circuit design
• Single-channel input configuration

Applications

• Consumer electronics touch interfaces
• Industrial control panel buttons
• Appliance user interface inputs

Procurement Notes

Verify the specific package variant, as the QT113H-D designation typically corresponds to the 8-DIP through-hole package, distinct from surface-mount variants like the ISG or IS suffixes. Confirm end-of-life status and lead times with authorized distributors, as availability may be limited due to discontinuation. Ensure compatibility with existing PCB footprints for 8-DIP components during procurement planning.

Selection Notes

Select this component when through-hole mounting is required for a single-channel capacitive touch application. Compare against the QT113H-IS for surface-mount needs or the QT112-D if pinout differences are critical. Verify that the 0°C to 70°C operating temperature range meets the environmental requirements of the target application before finalizing the design.

Part Context

The QT113H-D belongs to Microchip's QProx family of charge-transfer touch sensors. It serves as a dedicated solution for integrating touch functionality into systems without complex microcontroller programming. The DIP package facilitates prototyping and legacy board designs where surface-mount technology is not preferred or feasible.

Replacement Considerations

The QT113H-IS is a direct functional equivalent available in an 8-SOIC surface-mount package. For through-hole applications requiring identical electrical characteristics, verify availability of remaining QT113H-D stock or consult Microchip for recommended alternative part numbers.