USB-to-I²C bridge for embedded control
The Infineon CY7C65211-24LTXI is a USB-to-I²C bridge from the CapSense® series, translating USB 2.0 traffic to an I²C bus for controlling sensors, GPIO expanders, or other I²C peripherals from a host PC or embedded USB port. It integrates the USB transceiver and protocol stack, so the host sees a standard HID or vendor-class device — no driver development needed for basic enumeration. The UART interface is also available on the same pins, giving a second serial path for debug or legacy device connections.
Supply range and current budget
The 1.71 V to 5.5 V supply range lets this bridge run off a 1.71 V to 5.5 V rail. At 20 mA typical supply current, it stays within the USB 2.0 bus-powered hub budget.
Temperature grade and environment
Rated for -40°C to 85°C, this part fits industrial control cabinets, outdoor telecom enclosures, and engine-bay-adjacent electronics where the ambient can swing well beyond office temperature. The 24-QFN package (4x4 mm) with exposed pad helps conduct heat to the PCB ground plane — keep the thermal vias under the pad populated if you're running near the upper temperature limit.