name: MC33199 function: Serial Link Driver package: SO-14,14 manufacturer: Motorola added-by: Alexey Kuz`min comment: Used in K- and L-line System +--()--+ Vcc | 1 14| Ref-Out Ref-In-L | 2 13| Vs Ref-In-K | 3 12| L Lo | 4 11| L1 RxD | 5 10| GND TxD | 6 9| DIA NC | 7 8| NC +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/