The question here reads, can you play a Digital 8mm tape on an
analog camcorder. The answer to this is NO. An analogue Video8 or
Hi8 camcorder will display nothing useful if playing a tape
recorded with the Digital8 standard.
Only a Digital8 camcorder can play a Digital8 recording. In many
cases (but certainly not all) such a Digital8 camcorder will also
play analogue Video8 and Hi8 tapes.
Be aware that sometimes a person will have used a tape branded
as Digital8 to make recordings with a Video8 or Hi8 camcorder, and
in this case the recordings ARE analogue.
Another option is to convert your 8mm tapes to digital or DVDs.
There are a lot of 8mm video transfer services out there that can
do this for cheap. StashSpace.Com is a good one, costs $6.95 per
tape and they let you watch and edit online for free. Outside USA,
try a Google search for "digital8 to DVD transfers UK" or
similar.