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Help identifying an SMD IC

Hi,

I am trying to repair a damaged motherboard (it's a special PowerPC motherboard) and one particular component was scorched and became impossible to identify.

I obtained a high resolution photograph of the component in it's original state from another owner of this board.

I don't know if this component can be identified though, (certainly not by me anyway, with my meagre experience).

I was wondering if anyone might have any tips or a clue what the part might be...

The part is labelled "C042" and a high resolution picture of the board is here:

(Note: 800KB)

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The part is U26 on this board, approximately right in the middle of the photo)

Thanks for any tips,

Regards,

Ross..

Reply to
Ross Vumbaca
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On Mon, 24 Nov 2008 22:44:00 +1100, Ross Vumbaca put finger to keyboard and composed:

My first thought was that it may be a supervisor IC that holds the board in a reset state until the supply reaches a predetermined threshold. Searching for "C042" at ...

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... brings up an Exar part.

Exar make many supervisor ICs, but I couldn't find a likely candidate at the following URL:

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It is possible that "C042" is a code which identifies the threshold voltage. Many supervisor ICs use such a marking method.

- Franc Zabkar

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Reply to
Franc Zabkar

On Tue, 25 Nov 2008 06:08:43 +1100, Franc Zabkar put finger to keyboard and composed:

On second thoughts, I think I was wrong.

Instead I think it may be an SN74LVC1G04DBVR or SN74LVC1G04DBVT "single inverter gate".

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Page 2 of the datasheet states that the top side marking is "C04_", where the last digit indicates the "assembly/test site".

- Franc Zabkar

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Reply to
Franc Zabkar

Thanks heaps for your help, really appreciated. I wasn't able to even find a lead..

Best regards,

Ross..

Reply to
Ross Vumbaca

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