The SN65ALS180 and SN75ALS181 combine a 3-state differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected to separate terminals for greater flexibility and are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0.
| 器件型号 | 名称 | 产品系列 |
| SN75ALS181 | 差动驱动器和接收器对 | RS-422 |
