How to covert logic levels

[bimbla]

How to covert logic levels from a system operating on 3.3V to levels for a system working on 5V.

Is there a single IC for level translations?

Thanks in advance.

bimbla.

 

[Fom]

Open drain or open collector with external resistors.

 

[JURS]

Discussion of this **broken link removed**

 

[vijaiiyer]

Yes Level translators are available from different vendors. Alternately, you can check for the 3.3V devices' datasheet for 5V tolerance and 5V compliance.

 

[zolam]

see Maxim catalogue

 

[muralicrl]

Hi,

You can use transceiver with level shifter. You can use IDT74ALVC164245.

If you need more details, contact me.

Regards,

N.Muralidhara

CRL-BEL

 

[davidgrm]

You can usually send 3.3 volt signals to a 5 volt system because a hi on the 5v system is around 2.8 volts depending on what type of device it is. Sending data from 5 v system to 3.3 v system requires some care or else you can damage 3.3v device. One way to do it is to use a simple voltage divider with fairly low value resistors eg 1K & 2 k. This method might not be suitable in all instances. I have successfully used it to interface an MMC card to a 5v microcontroller

 

[muralicrl]

Hi,

You can use IDT74ALVC164245 to convert 5 to 3.3V and 3.3V to 5V. It works in both directions.

If you need more details, contact me.

Regards,

N.Muralidhara
CRL-BEL