WS2812 Logic Level Converter Recommendation

[fdaniels]

Ladies and Gentleman,

i'd like to drive some WS2812 via a Logic Level converter for security reasons. As real estate is precious on my project i'd like to go with a SMT type, preferably one single 3,5>5V converter.

Has anyone a recommendation ?? Any help is highly appreciated, im lost a bit here!

Thanks,
Frank

[PaulS]

Here you go: 74AHCT1G126.
You need the ..T.. part.

Paul

[luni]

TI has a single gate smd logic line. Would a 74HCT1G125 work? Here the datasheet https://www.ti.com/product/SN74AHCT1G125-Q1

Ups, 1 minute to late :-)

[fdaniels]

Are these look OK? I guess its just a wrong Picture?

https://www.ebay.de/itm/16X-74AHCT1G....c100005.m1851

[PaulS]

Perhaps better order them here? 10pcs for euro 0.82.

Paul

[fdaniels]

Perhaps better order them here? 10pcs for euro 0.82.

Paul

Sadly TME adds 5,9€ Shipping and i currently have no other parts to source, so the eBay Seller is cheaper.
Besides this, can you recommend TME?

[luni]

Actually, TME is my favorite EU seller. They have a very large assortment and deliver fast. (Usually I get my parts in 2-3 days to Germany)

[PaulS]

Agree with Luni, ordered several times there - no problems.

Paul

[PhilB]

Mosfet? cheap BSS138 and 2 resistors. HV in this case would be 5V.

[msadie]

Mosfet? cheap BSS138 and 2 resistors. HV in this case would be 5V.

I've had mixed results with this level converter circuit driving ws2812, as the low to high transition speed is limited by the 10k pull-up. Or I could have been doing something else wrong, I suppose.

[PhilB]

a lower HV pullup is needed. Probably 470 or 680 ohms.

[fdaniels]

Thanks for the suggestion, but i simply havent enough space to squeeze in a MosFet and 2 Resistors...

BTW: as i understand OE must be tied to VCC=5V, right? I neeeeeed more coffee.

[PaulS]

OE is an active-high signal, so yes, connect to 5V or 3V3.

Paul