The SN75C1167 combines dual 3-state differential line drivers and 3-state differential line receivers, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can be connected externally together to function as direction control. The SN75C1168 drivers have individual active-high enables. The SN75C1167 and SN75C1168 are characterized for operation from 0C to 70C.