QT140-ASG

Overview

The QT140-ASG is a capacitive touch sensor integrated circuit from Microchip Technology, designed for single-channel applications. It supports up to four keys and operates with a supply voltage of 5V. The device draws a typical current of 5mA. It is housed in a 28-pin SSOP package with a width of 5.30mm. This component belongs to the QProx and QTouch series, providing sensing capabilities for user interface interactions.

Feature Summary

• Supports capacitive sensing for up to four distinct keys
• Operates within a single-channel configuration
• Compatible with standard 5V power supply systems

Applications

• Consumer electronics user interfaces
• Appliance control panels
• Industrial equipment touch buttons

Procurement Notes

Verify the specific ordering suffix 'ASG' against official Microchip documentation to ensure correct package type and temperature range. Confirm RoHS compliance status through the manufacturer's datasheet or certified distributor declarations prior to procurement.

Selection Notes

Select this component when a single-channel solution supporting multiple keys is required. Ensure the application environment matches the specified 5V operating voltage and that the 28-SSOP package dimensions fit the target PCB layout constraints.

Part Context

This part is manufactured by Microchip Technology, formerly associated with Atmel. It is part of the broader QProx and QTouch product families, which are widely used for capacitive touch sensing solutions in various electronic devices requiring reliable user input detection.

Replacement Considerations

Consult official Microchip substitution guides for compatible alternatives. Verify pin compatibility and electrical specifications before replacing with other QProx or QTouch series components.