[SOLVED] Manufacturer of this semiconductor (Brand iC)

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kkdelabaca

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Hello,

I need replace this chip (Attached Thumbnail)

The problem is that I don't know the brand/manufacturer.
Somebody knows the logo of the manufacturer? The IC protect one bus RS422.

Thanks!
 

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  • unknow_IC.jpg
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Thanks!

Finally the part is the PSRDA05-4 (device marking: PRB) from Protek Devices.
**broken link removed**

Thanks again!
 

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