name: HT6240-002_20 function: Infrared Remote Encoder package: DIP/SOP20,20 manufacturer: Holtek +--()--+ VSS | 1 20| VDD TEST | 2 19| CT PRB | 3 18| OF0 OSCI | 4 17| OF1 OSCO | 5 16| OF2 DATA | 6 15| OF3 IE0 | 7 14| OF4 IE1 | 8 13| OF5 IE2 | 9 12| OF6 IE3 |10 11| OF7 +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: HT6240-002_SOP24 function: Infrared Remote Encoder package: SOP24,24 manufacturer: Holtek +--()--+ VSS | 1 24| VDD TEST | 2 23| CT PRB | 3 22| OF0 OSCI | 4 21| OF1 OSCO | 5 20| OF2 DATA | 6 19| OF3 IE0 | 7 18| OF4 IE1 | 8 17| OF5 IE2 | 9 16| OF6 IE3 |10 15| OF7 NC |11 14| NC NC |12 13| NC +------+ This pinout came from the Chipdir: http://www.chipdir.org/