Ah, I've just solved exactly this issue. Possibly.
My use of datasheets typically starts on the PC viewing the entire thing, then has specific pages printed out so I can refer to them without cluttering up the screen. The printouts are easier to mark, and have several pages viewable at once. But I end up with quite a lot of printouts for the bin, and if projects get put on hold then I can sometimes have duplicate (or more) copies of the same pages. Naturally, I only find the previous copies after printing the new ones.
The solution, I am hoping, is an e-ink tablet. Specifically the Boox Note Air:
https://www.boox.com/noteair/
If you're used to things like the Kindle, Nook or simillar, this will blow your socks off. Sure, it's e-ink and therefore not a speed demon on display refresh, but it ain't slow either. You can write at normal speeds and see the stuff appear just like it's paper - there is no discernible delay to put you off your stride. Page turns are pretty damn fast, and you can choose refresh speed vs quality to fine tune things.
However, for the question of datasheets, this is an A5 screen and easily big enough for most datasheets to display comfortably. In viewer mode (as opposed to note-taking mode) you can apply highlights, comments, etc. Either have it floating around on your desk like a (thick) sheet of paper or propped up like a second monitor (real paper can't do that).
There are other, similar, e-ink tablets. Boox even do an A4 one, although that's twice as expensive. However, what marks this one out is that under the bonnet it runs Android, so if you don't like the built-in viewer you can load up any of the pdf viewers on the Play store. Similarly, I ignore the built-in sync-to-China feature and loaded up Nextcloud to sync with my NAS directly.
Away from datasheets I am trying to get into the habit of using it for notes. Previously I've used a mix of paper and various PC apps, from Onenote to myBase, but they all have some downside. The paper one would be good if it didn't involve printing charts to stick in it, and then worrying that my only copy is a coffee mug away from being borked. The Boox allows me to do real writing, past in images (albeit they need syncing over first) and then making marks on them in a way I can't on the PC. I can even move writing to make room for a bit more if necessary, so the procrastination caused by being unsure where to start (will I need more space? Waste too much space?) is circumvented. Periodically I sync to the PC and the magic of Nextcloud means my master copy is on the NAS and I have up-to-date copies on the PC and phone.
The main downside is it's monochrome. There are shades of grey which work very well, but writing with them is off-putting a bit. And they're grey. You can use colour (well, the primaries) but you only see them as colour after syncing to the PC, or phone, and viewing there.
Honest, I am not getting a kickback off 'em

If this kind of wets your fancy, and very good Tube channel to check out is:
https://www.youtube.com/c/MyDeepGuideThe chap does in-depth reviews and usage guides for pretty much all tablets of this type, and ain't afraid to compare them.