New advanced multiprotocol transceiver features a wide output swing

Stocked by Digi-Key, the XR34350 from Exar features a wide 10V RS232 driver output that supports a wider range of RS232 peripherals. The device includes integrated cable termination that reduces component count and saves board space. It supports full DB9 RS232 or RS485/RS422 serial protocols from one IC allowing all three protocols to be used interchangeably over a single cable or connector with no additional switching components. The device is an advanced multiprotocol transceiver supporting RS232, RS485, and RS422 serial standards in a 40-pin QFN package. It simplifies industrial designs and supports a broader range of legacy peripherals with a wide 10V RS232 driver output. Integrated cable termination and four configuration modes allow all three protocols to be used interchangeably over a single cable or connector with no additional switching components. Full operation requires only four external charge pump capacitors. The RS485/RS422 modes feature one driver and one receiver (1Tx/1Rx) in both half and full duplex configurations. The RS232 mode (3Tx/5Rx) provides full support of all eight signals commonly used with DB9 RS232 connector. A dedicated diagnostic loopback mode is also provided. The high-speed drivers operate up to 20Mbps in RS485/RS422 modes and up to 1Mbps in RS232 mode. All drivers can be slew limited to 250kbps in any mode to minimise EMI.