Zitat von jure zitnik <
kokoon@gmail.com>:
> hello. i'm wondering if there are any ICs equivalent to the TC-5514
> APL-3 used in the polysix. mine might be faulty and i distantly
> remember reading somewhere about some chips that can be used as a
> direct replacement... or am i wrong?
>
> jure
From: The Old Crow ( [EMAIL REMOVED] )
Date: Mar 16, 2001
Subject: Re: [sdiy] TC5514 s-ram chip needed
On Fri, 16 Mar 2001, Tony Allgood wrote:
> Has anyone got any of these things lying around? They were made be
> several companies a long time ago, National and Intersil (Harris) had
> them under the pt number 6514. Its a 1024 x 4-bit sram. Pin compatible
> with the NMOS 2114 but CMOS. Why do I want one? I have a Polysix with a
> dead memory, and I have traced it to this chip. I had a 2114 and it
> works fine but draws a whopping 25mA even on standby!
Tony,
Jameco has an equivalent I've used in Polysixes. Their stock number is
43238. They even cross-reference it to the uPD444C of TR-303 fame.
http://www.jameco.com/
Cheers,
Crow
Ciao
Peter
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Ing. Peter Ullrich
Hardware & Software Developer / Electronic Musician
Private Homepage: http://www.ullrich.at.tt
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