| Компонент | Описание | Производитель | |
| HWD491C/D | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
List of Unclassifed Manufacturers |
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| HWD491CPD | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
List of Unclassifed Manufacturers |
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| HWD491CSD | Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers |
List of Unclassifed Manufacturers |