Bus LVDS (BLVDS) is a new family of bus interface circuits invented by National Semiconductor based on LVDS technology. This family of interface devices is optimized for multipoint cable and backplane applications. The DS92LV010A is the first member of this family and is a single transceiver device which supports operation at 155 Mbps in heavily loaded (20 Card) backplane applications. It differs from standard LVDS in providing increased drive current to handle double terminations that are required in the multi-point application.BLVDS drivers are also enhanced in their contention protection,and feature balanced output impedance.