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RAM replacement ICs?

RAM replacement ICs?

2006-02-20 by jure zitnik

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

Re: [PolySix] RAM replacement ICs?

2006-02-20 by (no author)

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
Show quoted textHide quoted text
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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Re: [PolySix] RAM replacement ICs?

2006-02-20 by (no author)

> 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

You can get TC5514-APL2 here:

http://www.vintageplanet.nl/content.html

Ciao
Peter

        \|/
       (o o)
--oOOO--(_)--OOOo------------------------------------------------------
                               Ing. Peter Ullrich   
	               Hardware & Software Developer  /  Electronic Musician
                               Private Homepage: http://www.ullrich.at.tt
   .oooO           
   (   )   Oooo.   
    \ (    (   )   
-----\_)----) /--------------------------------------------------------
           (_/



--------------------------------------
Ein Service von http://www.networld.at