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Forum Index : Microcontroller and PC projects : Level shifter

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Plasmamac

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Joined: 31/01/2019
Location: Germany
Posts: 572
Posted: 07:36am 22 Oct 2024
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What level shifter is the best for using on the Picomite?
Plasma
 
PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 1181
Posted: 08:03am 22 Oct 2024
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  Plasmamac said  What level shifter is the best for using on the Picomite?


If uni-direction, I like the 74HC4050


74HC4050.pdf
 
Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4889
Posted: 08:10am 22 Oct 2024
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This works as well for I2C and signals up to few hundred kHz.



Volhout
PicomiteVGA PETSCII ROBOTS
 
Marcel27

Regular Member

Joined: 13/08/2024
Location: Netherlands
Posts: 77
Posted: 11:18am 22 Oct 2024
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Double entry ..... link
Edited 2024-10-22 21:19 by Marcel27
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 7566
Posted: 12:40pm 22 Oct 2024
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If you only need two channels then I've found that 2 mosfets and four resistors can often be squeezed into spaces that you wouldn't expect them to fit. Mind you, I've put one of those suggested by Volhout between the legs of a Pico. :)

For shifting downwards only, a simple potential divider often works.
Edited 2024-10-22 22:42 by Mixtel90
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
Martin H.

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Joined: 04/06/2022
Location: Germany
Posts: 1194
Posted: 03:15pm 22 Oct 2024
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I have successfully used ZVNL110A for PS2 Level shift so far
'no comment
 
stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2404
Posted: 05:19pm 22 Oct 2024
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I used 8 channel bi-direction level inverter with arduino and ili9341 as arduino 5v logic and ili 3.3v
their cheap and should be ok to raise 3.3v logic to 5v
 
Plasmamac

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Joined: 31/01/2019
Location: Germany
Posts: 572
Posted: 11:23am 23 Oct 2024
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Thx for all ,

@stanleyella link please
Plasma
 
stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2404
Posted: 02:55pm 23 Oct 2024
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  Plasmamac said  Thx for all ,

@stanleyella link please

bought years ago, something like this. 8 fets, marked LV and HV, LV is 3.3 device, HV is 5V device
https://www.ebay.co.uk/itm/192441573509
 
stanleyella

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Joined: 25/06/2022
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Posts: 2404
Posted: 06:40pm 23 Oct 2024
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what's it for?
 
Marcel27

Regular Member

Joined: 13/08/2024
Location: Netherlands
Posts: 77
Posted: 05:23am 24 Oct 2024
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I use most of the time a voltage devider for low speed or BS170 for 2-way or an optocoupler for 1-way communication. I've a lot of optocouplers lying around and work fine.
 
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