How to convert 3.3 V logic to 5V logic

[coblaze]

convert 3.3 to 5v

Hi,

I have a microcontroller which I need to run at 3.3V. But then i have another chip which wont work at 3.3v (works on 5v). What do i do if my microcontroller is sending signal to the other chip??

 

[BHOOM]

convert 3.3v to 5v

JUST USE TRANSITOR CKT AS A VOLTAGE FOLLOWER OR U CAN USE OPTO COUPLR, OR THERE R MANY INVRTER , NON INVERTER IC'S WHICH CAN BE USED FOR THIS PURPUOSE FOR EXAMPLE 75LS244

 

[coblaze]

5v transistor with 3.3 microcontroller

will 245 work?

 

[eltonjohn]

how to convert 5v to 3.3

also check the IC output charcteristics .Some are 5 volt tolerant ..Then you only need a pull up resistor

 

[bearxzg168]

how to convert 3.3v to 5v?

Hi,

I have a microcontroller which I need to run at 3.3V. But then i have another chip which wont work at 3.3v (works on 5v). What do i do if my microcontroller is sending signal to the other chip??

you can use npn or pnp audion to achieve

 

[Slayerza]

converting from 3.3v to 5v

The transistor solution is only good if you need to translate 1 or 2 lines. Typically you will need two transistors per line (if the line in dual directional). If you need more lines (say for an LCD screen) then a line buffer IC is the preferred solution.

Cheers
Slayer

 

[fazan83]

buffer 3.3 5v logic

Hi,

I have a microcontroller which I need to run at 3.3V. But then i have another chip which wont work at 3.3v (works on 5v). What do i do if my microcontroller is sending signal to the other chip??

You can use LM1084 adjustable voltage regulator to provide the 3.3VDC and 5VDC.