NAME PIN NUMBER TYPE DESCRIPTION C1+ 1 Input/Output Positive lead of C1 capacitor V+ 2 Output Positive charge pump output for storage capacitor only C1- 3 Input/Output Negative lead of C1 capacitor C2+ 4 Input/Output Positive lead of C2 capacitor C2- 5 Input/Output Negative lead of C2 capacitor V- 6 Output Negative charge pump output for storage capacitor only DOUT2 7 Output Second RS-232 line data output, cable side RIN2 8 Input Second RS-232 line data input, cable side ROUT2 9 Output Second logic data output, logical side DIN2 10 Input Second logic data input, logical side DIN1 11 Input First logic data input, logical side ROUT1 12 Output First logic data output, logical side RIN1 13 Input First RS-232 line data input, cable side DOUT1 14 Output First RS-232 line data output, cable side GND 15 Ground Ground VCC 16电源电压