Digital Logic signal boosting.

[cpuchip]

I am trying to boost the signal coming off of a WS2811 pixel for a longer wire run, A lot like the F-Amp's by Falcon
https://www.pixelcontroller.com/store/index.php?id_product=53&controller=product

I ran out of those, and thought it'd be fun to make my own, but I'm running into issues.

A few constraints I'm working with. All I have on hand are mosfets 2n7000 or the FQP30N06L N-channel enhancement Mosfets.

I have 10 volts coming in, but can easily drop that down to 5v for logic level work. but I really don't know what the input signal voltage level will be, somewhere from 3 volts to 5v

I'm trying to bread board a circuit to boost the signal like this one linked below, but tying the Low Voltage and High Voltage lines together since they "should" be the same level but That doesn't boost the voltage out. This does not need to be bi-directional. my input clock rate is 800KHz and I have an oscilloscope and function generator to check that a clean squarewave makes it through in that configuration, but I cannot get it to amplify the voltage back up to 5v logic levels. What am I missing.

https://www.pololu.com/blog/343/new-product-logic-level-shifter-4-channel-bidirectional

[cpuchip]

Does anybody have experience making a spi/i2c signal booster? NOT a logic level translator, I'm not really going from 3.3v to 5v I'm just trying to repeat the digital signal along the wire.

[oPossum]

A pair of SN75176A or similar (there are many pin compatible alternatives available). Use one as the transmitter with DE & RE tied high. Use another as the receiver with DE & RE tied low.

[cpuchip]

A pair of SN75176A or similar (there are many pin compatible alternatives available). Use one as the transmitter with DE & RE tied high. Use another as the receiver with DE & RE tied low.

Okay! so basically any RS-485 chip? I sadly don't have any of those.

but I think I might have figured it out with a BS170 mosfet. I needed a stronger 5v output resistor since the 10k wasn't pulling it up to 5v fast enough for above 100KHz

Since I'm not worried about by directional IO just low voltage to higher voltage it should be alright.