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TVS Diode Array D+/D- Pins Reversible
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Topic: TVS Diode Array D+/D- Pins Reversible (Read 1360 times)
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benwis
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TVS Diode Array D+/D- Pins Reversible
«
on:
July 29, 2016, 02:26:56 am »
Hi,
I'm laying out a TPD4S014 TVS array on my USB 2 Full Speed host, and I see in the layout section of the datasheet that the D- differential pin is connected ot the D+ input. The datasheet makes no mention of them being switchable, but I can't think of a reason they wouldn't be based on the schematic. Can anyone confirm whether it is okay to do this?
EDIT: Put non existent part name in there
Link to Part:
http://www.ti.com/product/TPD4S014
«
Last Edit: July 29, 2016, 02:44:37 am by benwis
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T3sl4co1l
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Posts: 22435
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Expert, Analog Electronics, PCB Layout, EMC
Re: TVS Diode Array D+/D- Pins Reversible
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Reply #1 on:
July 29, 2016, 05:44:53 am »
Often, USB filter chips have pullup/down resistors inside, in which case polarity will matter.
If it is as the diagram says, then no, it doesn't matter.
Tim
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