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Adapte 3.3v to 5V for ARM microcontrolles(e.g: Command to L298N,Reading 5V encoder)

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amirtaha

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Hi.
I/O of ARM microcontrollers are 3.3V but many device work with 5V.
How can i adapted 3.3V to 5V?
For example For driving L298N(DC motor drive) i have to send 5V to IC but Arm microcontrolles
output is 3.3V.
Or output of many encoder is 5V but input of ARM have to 3.3v.
Thanks
 

I/O of ARM microcontrollers are 3.3V but many device work with 5V.
Click to expand...
I think ARM MCUs have 5V tolerant I/O pins so there shouldn't be a problem reading 5V.


For example For driving L298N(DC motor drive) i have to send 5V to IC but Arm microcontrolles
output is 3.3V.
Click to expand...
It is likely that a 5V device will recognize 3.3V as '1' logic. In any case you could use various topologies, but level translators should be the most secure (and expensive) choice.

**broken link removed**
https://www.edaboard.com/threads/204270/

Hope it helped,
Alexandros
 

You can use any 74HCT logic gate with 5v supply like for example 74HCT244.
The HCT series use TTL levels so anything above 2v is considered high and will give 5v to the output

Alex
 

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