5 to 3.3 buffer needed

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flashking

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5V to 3V buffer needed

Hello

I am communication with UART between two devices

on has a locic level 5 for high and 0 for low

the other has 3 volts for high and 0 for low

is there a buffer than be used to translate voltages between the two devices ?

knowing that I need it to translate levels both ways (TX and RX)
 
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Like alexan_e wrote "There are a few ways to do it"

**broken link removed**

KAK
 

You are looking at the manufacturer 1000+ price, in a shop the price for a single chip as about 2$ ( **broken link removed** ).
Any of the above solutions using transistor or mosfet will be cheaper.

Alex
 
thanks 4 all your replies

I will read them and decide

by the way:

the high to low conversion is easy as I can put a volage devider(resistors)

however can I implement a low to high conversion by a transistor ?

noting that the levels will be inverted

so is there a simple switch that has 5V supply and takes 3V as an input signal and outputs
5V ?
 
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