level shifter to convert 5V TTL to 3.3V TTL chip

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bianchi77

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Hello there,

Do you guys know what chip for converting 5V TTL to 3.3V TTL ?

Thanks
 

You can use the 74AHC series (74AHC245) to interface the different voltages.
The AHC series can tolerate an input of 5v with a power supply of 3.3v so it can take 5v as input and output 3.3v
http://ics.nxp.com/products/ahc/datasheet/74ahc245.74ahct245.pdf

The 74LVC series can be also used, it can also tolerate a 5v input with 3.3 power supply.


Alex
 


Thanks a lot Alex,
my input are from 89C55WD 5V and I want to drive TFT LCD which needs 3.3V, is it possible ?

---------- Post added at 11:51 ---------- Previous post was at 11:37 ----------
You can use the 74AHC series (74AHC245) to interface the different voltages.
The AHC series can tolerate an input of 5v with a power supply of 3.3v so it can take 5v as input and output 3.3v
http://ics.nxp.com/products/ahc/data....74ahct245.pdf
Click to expand...

so I give 3.3V power supply to 74AHC245 and put the input 5V from 89S52 ?
Thanks
 

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