RS-485/RS-422 Transceivers with Preemphasis for High-Speed Long-Distance communication RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance communication LINE TRANSCEIVER, PDSO14 RS-485/RS-422 Transceivers with Preemphasis for High-Speed, Long-Distance communication LINE TRANSCEIVER, PDIP14