SP335EER1-L

The SP335EER1-L is an Advanced Multiprotocol Transceiver supporting RS-232, RS-485 and RS-422 serial standards. Integrated cable termination and multiple configuration modes allow all three protocols to be used interchangeably over a single cable or connector with no additional switching components. The RS-485/RS-232 mode pin selects RS-485 mode when high and RS-232 mode when low. In RS-485 mode, the TERM pin enables the differential 120R termination and the HALF/FULL pin configures the transceiver as either half or full duplex. The high speed drivers operate up to 20Mbps in RS- 485/422 modes and up to 1Mbps in RS-232 mode. All drivers can be slew limited to 250kbps in any mode to minimize electromagnetic interference (EMI) by setting the dedicated SLEW pin low. The RS-232 receiver inputs include a 5kR pull-down to ground when in RS-232 mode. The RS-485/422 receiver inputs are high impedance, allowing up to 256 devices on a single communication bus.