V–28C2+27C2–26DR1 IN25RX1 OUT24DR2 IN23RX2 OUT22RX3 OUT21RX4 OUT20DR3 IN19RX5 OUT18GND17NC16NC15NC14ON/OFF#13RX5 IN12DR3 OUT11RX4 IN10RX3 IN9RX2 IN8DR2 OUT7RX1 IN6DR1 OUT5C1–4C1+3VCC2V+1