Exar has announced what it says is the smallest form factor single-channel UART in a 24-pin QFN package. Ideal for space-constrained applications, it says the XR16L580 offers the smallest package dimensions, with a footprint of only 4 x 4 mm and a height of 0,9 mm. The device features an industry standard 16C550 register set and enhanced features such as 16-byte Transmit (TX) and Receive (RX) FIFOs with selectable trigger levels, automatic software flow control (Xon/Xoff), infrared (IrDA) encoder/decoder, and sleep mode. The XR16L580 is a 2,5 V to 5 V device with 5 V tolerant inputs, and supports both Intel and Motorola 8-bit data bus interfaces. Its power-save feature reduces power consumption to under 30 µA at 5 V. It is rated for -40 to +85°C operation.
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