I just found a data sheet published in 1997 by Analog Devices for this part.
I also found a website in Finland that lists it for sale.
I'll try digging some more but I suspect the AD561 is still abundant.
/harry
>From: "Christopher X. Candreva" < >
>Reply-To:
>To:
>Subject: Re: VECTOR: Lunar Lander parts...
>Date: Sat, 15 Jul 2000 12:27:59 -0400 (EDT)
>
>On Sat, 15 Jul 2000, Gregg Woodcock wrote:
>
> > I have AD561 chips for $30 each in EXTREMELY limited supply (as in less
>than
> > 1 tube). I know of no other source on the planet for these except maybe
>1
>
>Ouch. Al K. had a supply of about 80 back in '97 -- I bought a few from
>him
>then. THinking I should have gotten more.
>
>(No doubt they are worth that much though, if they are that rare.)
>
>-Chris
>
>==========================================================
>Chris Candreva -- -- (914) 967-7816
>WestNet Internet Services of Westchester
>http://www.westnet.com/
>
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