SP490TheSP490isalowpowerdifferentiallinedriver/receivermeetingRS-485andRS-422standardsupto5Mbps.TheSP491isidenticaltotheSP490withtheadditionofdriverandreceivertri-stateenablelines.Bothproductsfeature±200mVreceiverinputsensitivity,overwidecommonmoderange.TheSP490isavailablein8-pinpl