discuss both original and modern hardware for the bbc micro/electron
That sounds about right (although 10k might only be enough to stop them hanging up the 'phone on you: you might need rather more to actually get the fab to run...). This is something being seen all over at the moment (lead times well over 6 months seem to be the norm, 12 months is not uncommon) and is currently driving those of us in the mid-volume manufacturing world to despair!
Rochester, btw, are a strange company (they are a distributor rather than manufacturer): their business model is buying and holding excess stock. So they are a "first-line" approved distributor for several major manufacturers, but mainly carry obsolete parts: they have an arrangement with the likes of TI and AD to buy an extra 25k or so parts on the last run of every part... (which has got my company out of a few holes when "procurement" weren't paying attention!). They also will pick up the surplus if somebody cancels an order (to save the actual manufacturer having to hang onto the stockpile).
All that said, I note that Mouser are carrying a couple of hundred (they're fine with small credit-card purchases, but all stock is in the USA so takes a week or so), TI themselves are claiming an inventory of ~4000 (looks like they're happy to ship direct, although I don't have experience with them) and Rochester have a lot - although they might insist on only dealing with a corporate account. So now might be a good time to stock up while there are still some left!
Last time I ordered some samples direct from TI, they were actually fulfilled by Digikey - even though Digikey claimed no stock of the parts in question.wiggy wrote: ↑Thu Apr 08, 2021 7:57 pmTI themselves are claiming an inventory of ~4000 (looks like they're happy to ship direct, although I don't have experience with them) and Rochester have a lot - although they might insist on only dealing with a corporate account. So now might be a good time to stock up while there are still some left!
Currently on the SN75159, Digikey are currently claiming "factory stock of 6150" @£3.05ea against which you can order with a MOQ of 125 (so £382.06).
The TI direct order cart claims a stock of 4015 and lets you order any quantity (as it's intended for samples) at only £2.95ea.
Also, TI claim that they are 'active' status, though obviously that could change at any time and it is single-source.
So there doesn't look like any imminent shortage.
I found the SN65C1168 when looking for a transceiver for my USB Econet interface (much neglected; see the thread discussing philb's current work for a contemporary alternative). It looks like it's still around, giving you a pair of drivers and a pair of receivers for $1.68. Might still be a good option for clock + data in one package.
I have a couple of spare Pis, but none of my three beebs have Econet hardware, doesn't that count as an excuse?
Or the even simpler version 1 of this: https://www.waitingforfriday.com/?p=43
I put this together on some stripboard a few months ago, and works great! Also fits inside a Beeb, if you want to.
Like this (with terminator too, plugable, which is the smaller stripboard at the bottom):