name: HT12A_DIP18 function: 2**12 Series of Encoders package: DIP18,18 manufacturer: Holtek +--()--+ A0 | 1 18| VDD A1 | 2 17| DOUT A2 | 3 16| X1 A3 | 4 15| X2 A4 | 5 14| L/MB A5 | 6 13| D11 A6 | 7 12| D10 A7 | 8 11| D9 VSS | 9 10| D8 +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: HT12A_SOP20 function: 2**12 Series of Encoders package: SOP20,20 manufacturer: Holtek +--()--+ NC | 1 20| NC A0 | 2 19| VDD A1 | 3 18| DOUT A2 | 4 17| X1 A3 | 5 16| X2 A4 | 6 15| L/MB A5 | 7 14| D11 A6 | 8 13| D10 A7 | 9 12| D9 VSS |10 11| D8 +------+ This pinout came from the Chipdir: http://www.chipdir.org/