| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | DS481 |  156Kb/10P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481 |  549Kb/8P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481M |  156Kb/10P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481N |  156Kb/10P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481TM |  156Kb/10P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481TM |  549Kb/8P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
 National Semiconductor ... | DS481TN |  156Kb/10P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |
| DS481 |  549Kb/8P | Low Power RS-485/RS-422 Multipoint Transceiver with Sleep Mode |