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href="/products/interface/uarts/i2c-spi-uarts" ><h2>I²C/SPI UARTs</h2></a> <div>I2C/SPI Universal Asynchronous Receiver-Transmitter (UARTs) that include a simple 2-wire (I2C) or 4-wire (SPI) interface</div> </li> <li class="col-md-6"> <a href="/products/interface/uarts/pcie-uarts" ><h2>PCIe UARTs</h2></a> <div>PCIe Universal Asynchronous Receiver-Transmitters (UARTs) designed for use in system boards or add-in cards</div> </li> <li class="col-md-6"> <a href="/products/interface/uarts/usb-uarts" ><h2>USB UARTs</h2></a> <div>Universal Asynchronous Receiver and Transmitter (UART) devices with a USB 2.0 data bus interface are designed for peripheral or inter-system communication</div> </li> </ul> </div> </div> </div> </div> </main> <!-- Footer --> <div class="footer-partial"> <div class="footer-links"> <div class="container"> <div class="row"> <div class="col-lg-3"> <a href="/infrastructure/hsi"> <img class="logo" src="/Content/Images/mxl-logo-invert.svg"> </a> </div> <div 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