XR33193, XR33194, XR33195 RS-485/422 Transmitters MaxLinear XR33193, XR33194, and XR33195 RS-485/RS-422 Transmitters combine low power, high performance, small packaging, and high ±15kV ESD protection. The XR3319x Series Transmitters operate from a 3.3V supply and draw only 180µA (375µA maximum) of supply current. All transmitters feature a shutdown mode that consumes less than 2µA whenever the transmitters are disabled.