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TOP258 IC w/ strange pin layout?

Posted by: xrizz on Tue, 04/20/2021


I bought a small number of TOP258PN ICs for a prototype for a project. Strangely, these ICs have a pinout different from what is described in the data sheet (find pictures attached). Can anyone explain why the layout does not match? What am I missing?
writing on IC:
row1: "1822"
row2: "TOP258PN"
row3: "5A376A"

Thanks in advance and kind regards.



Attachment Size
datasheet_layout 26.38 KB
layout_my_IC_1 242.67 KB
layout_my_IC 252.66 KB


Submitted by PI-Wrench on Wed, 04/21/2021

Please re-post the pictures - they did not show up on the forum. Use the "add a new file" function to post the pictures, making sure that the files are not too large.

Submitted by PI-Wrench on Fri, 04/23/2021

I strongly suspect a badly executed fake. Did you buy these from one of our distributors, or an online seller?

Thanks, that's what i suspected. Since i only needed a few pieces for a private project, I bought them from an ebay seller... so yeah, not a big surprise


Thanks for your opinion!

Submitted by PI-Wrench on Fri, 04/23/2021

Unfortunately, fakes abound, and most everything can be faked if some profit is perceived... Digi-key has your part.