name: TCM3105N function: TX / RX package: DIP,20 manufacturer: RS CONPONENCE LTD added-by: GAN SEK KONG comment: For modem use. +--()--+ VDD | 1 20| | 2 19| | 3 18| RXC | 4 17| TRS | 5 16| OSC2 | 6 15| OSC1 RXB | 7 14| TXD RXD | 8 13| TXR1 VSS | 9 12| TXR2 COL |10 11| TXC +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/