V+1VCC2C1+3C1–4DR1OUT5DR2OUT6RX1IN7DR3OUT8RX2IN9DR4OUT10RX3IN11DR5OUT12RXENABLE13NC14NC15DRENABLE16GND17DR5IN18RX3OUT19DR4IN20RX2OUT21DR3IN22RX1OUT23DR2IN24DR1IN25C2–26C2+27V–28