CY8C20111-SX1IT

Overview

The CY8C20111-SX1IT is a capacitive touch controller from Infineon Technologies, designed for simple button-based interfaces. It operates within a supply voltage range of 1.71 V to 5.5 V and supports an I2C interface for communication. The device features two capacitive sensing inputs and is housed in an 8-SOIC package with a width of 3.90 mm. It functions reliably across a temperature range of -40 °C to +85 °C. This component belongs to the CapSense Express series, offering surface-mount installation for compact electronic designs requiring reliable touch input detection.

Feature Summary

• Supports two capacitive sensing channels for user input
• Utilizes I2C interface for system communication
• Operates on low voltage supply ranging from 1.71 V to 5.5 V

Applications

• Consumer electronics with basic touch controls
• Industrial control panels requiring durable input
• Portable devices needing low-power touch solutions

Procurement Notes

Verify the specific suffix IT against official Infineon documentation to confirm tape-and-reel packaging requirements. Ensure the ordering part number matches the exact electrical specifications and package type listed in the current datasheet. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required by your manufacturing standards before finalizing procurement orders.

Selection Notes

Select this controller when a minimal pin-count solution for two-button interfaces is required. The I2C interface simplifies integration with microcontrollers compared to parallel or GPIO-only alternatives. Consider the SOIC-8 package for standard surface-mount assembly processes. Evaluate the operating voltage range to ensure compatibility with the target system's power rails without additional level shifting.

Part Context

This component is part of the CapSense Express family, which provides integrated capacitive touch sensing capabilities. It serves as a dedicated controller for translating physical touch events into digital signals. The series is optimized for cost-effective and space-constrained applications where full touchscreens are unnecessary but reliable button interaction is critical.

Replacement Considerations

Check for CY8CMBR3002 variants within the same manufacturer lineup for potential functional equivalents. Verify pinout compatibility and software driver availability before substituting any alternative part numbers.