MAX3002 MAX3003 SPI 3.3v <> 5v Level Translation

Nov 20, 2007 2 Replies
A

Hello,



Would anyone have experience of these parts? Namely, caveats and design considerations?



I'm intending to use a suitable level translator between a 5v dsPIC (It has to be 5v for an 8-bit bus) and a 3.3v SPI MMC/SD card.



A voltage divider isn't really suitable due to 3.3v not quite reaching the dsPIC's 1 threshold. So it makes sense to digitally convert all of the lines.



I have 16 of these little TSSOP 0.65mm pitch parts staring at me.. They look pretty harmless.



Thanks kindly,



Alison


Vote
Twitter Facebook LinkedIn
P

If the traces are of any length, put a serial termination resistor in each one. That seems to be all as far as I've found out, otherwise they just behave.

Vote
Twitter Facebook LinkedIn
A

Excellent. Thank you. :-)

I think the traces will be no more than about 10-20mm in length at say

20mils. I'm certainly not going round the houses. :-)
Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required