Signal level coverter/adapter

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Signal level coverter/adapter

Postby octal » Wed Dec 27, 2017 3:02 pm

Hello,
I have found a schematics of a level converter at Pololu,

https://www.pololu.com/product/2595

Image

I zoomed the transistors used by this module if anyone can help identify them

Image

Can anyone suggest a ref for the mosfet used? pololu refuse to disclose the ref they use, and btw, I want to use it for up to 10MHz if possible.


Regards
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Re: Signal level coverter/adapter

Postby tayken » Sat Dec 30, 2017 7:00 am

It looks awfully similar to Sparkfun's version: https://www.sparkfun.com/products/12009

Of course they used another MOSFET in SOT23-6 package. The problem with these packages are it's almost impossible to figure out the part number from surface markings.
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Re: Signal level coverter/adapter

Postby octal » Sun Jan 07, 2018 5:38 pm

I'll do some trial and let you know about my results.
My idea is to create a small usb powered I2C, SPI and OW serial memories. The signal level converter will let me program low level voltage memories (1.8 up to 2.2V mainly).
I'll publish all my tests and my programmer schematics soon.

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