====== RS-485/RS-422 ======

| Sitcores          | china?      | |
| ST                | switzerland | | 
| TI\Maxim          | usa         | |
| Analog Devices    | usa         | |
| Renesas(Intersil) | Japan       | |
| EXAR              | usa         | |
| ASIX              | taiwan      | |
| 3PEAK             |             | |
| Corebai           |             | |


===== Sitcores =====

===== ST =====

===== Renesas =====

===== 3PEAK =====

===== Corebai =====