Below is the pinout for the DG303ACWE+ 16 pin SOIC (W):: Pin 1 = N/C Pin 2 = S3 Pin 3 = D3 Pin 4 = D1 Pin 5 = S1 Pin 6 = IN1 Pin 7 = GND Pin 8 = N/C Pin 9 = N/C Pin 10 = V- Pin 11 = IN2 Pin 12 = S2 Pin 13 = D2 Pin 14 = D4 Pin 15 = S4 Pin 16 = V+ Pins 1-7 are the same as for the 14 pin pkg Pins 8 and 9 are N/C Pins 10-16 are same as pins 8-14 of the 14 pin pkg