V+1C2+2C2-3VCC4C1+5C1-6DR1_OUT7RX1_IN8DR2_OUT9RX2_IN10RX3_IN11RX4_IN12DR3_OUT13RX5_IN14GND15RXEN16DREN17RX5_OUT18DR3_IN19RX4_OUT20RX3_OUT21RX2_OUT22DR2_IN23RX1_OUT24DR1_IN25C3-26C3+27V-28