DIY Bob with digital couplers rather than optocouplers

During my search for a suitable high speed coupler for a diy BOB if found some high speed digital couplers that ar working with magnetic or captive coupling for galvanic protection. Do we have anyone in this forum that hav been experimenting with those?
Some example part numbers below.
ADUM3151ARSZ-RL7     (Magnetic)  General Purpose Digital Isolator 2500Vrms 4 Channel 2Mbps 25kV/µs 
TJF1052IT/5Y   (Captive)  CAN Digital Isolator 5000Vrms 2 Channel 2Mbps 20kV/µs 

Kind regards/Stefan 
 

Are you interested in them for use in a diy BOB instead of optocouplers or for their designed use for SPI and CAN bus isolation respectively?
Note that the first offers only 4 highspeed channels out of 7 with the other 3 being low speed data channels while the second is used for a two wire differential signal.

So I agree with Tommy,I don't see how either would be useful for general pupose IO signals or how you would get any benefit over using a 'regular' high speed optocoupler which are easily available up to 20 or even more Mbs.

Note that some of these magnetic couplers cannot pass DC, which is the situation with a step or direction signal. They don't cange very fast when the machine is not moving that axis.
Jon

Some fast optos I have used for fast PWM signals are :
HCPL-0201-500E fast, 20 V, SMT Digi-Key part # 516-1704-5
This one can handle up to a 20 v DC supply on the output.
HCPL-063L-500E fast, 3.3V SMT
And, this one is good at 3.3 and 5 V supply on the receiver side.
Jon

We have used these for years for things like serial links.

The TI ones are quite reasonable, for example:

ISO7740DWR:

4 channels
100 mbits/sec
5000V RMS isolation
2.25 to 5V operation

About $2.00 in low quantities