2 Pin Diagrams Figure 2-1. 14-Pin SOIC 14-Pin TSSOP Figure 2-2. 20-Pin PDIP 20-Pin SOIC 20-Pin SSOP Figure 2-3. 20-Pin VQFN Note: It is recommended that the exposed bottom pad be connected to VSS; however, it must not be the only VSS connection to the device.