max232 +---\/---+ 1 -|C1+ Vcc|- 16 2 -|V+ gnd|- 15 3 -|C1- T1O|- 14 4 -|C2+ R1I|- 13 5 -|C2- R1O|- 12 6 -|V- T1I|- 11 7 -|T2O T2I|- 10 8 -|R2I R2O|- 9 +--------+