We need data transmission rate upto 20msps and we need a transmission line length of 60-70meters with cat6 cable. The appropriate ic seems to be sn65hvd75. However, we have many sn65hvd78 with us so we prefer using sn65hvd68 instead sn65hvd65 in our application. the max rate of sn68hvd78 is 50msps and max length is 50m. When we use sn65hvd78 with 20msps rate, will it work for transmission length of 60-70m ?