Re: Last ZipGS RAM question...

[Rubywand <rubywand@swbell.net>]

Martin Gruen writes ...
> 
> So it seems that no one has been able to answer the question of which 32x8
> SRAM the zip needs.
> 
> Can someone at least point me toward a company's part # for a 15ns (Wide)
> chip that they know will work?
 ....

     Wide (600 mil) package 32k x 8 fast static RAM chips are fairly
rare. You may end up needing to modify the sockets (see Csa2ACCEL.txt
FAQs file) and using 300 mil chips.  

Here are some of the faster 28-pin static SRAMs in 600 and 300 mil DIP
packages ...


Integrated Device Technologies (integral symbol logo)

IDT71256 S(or "L" for "low power") 
 20-45ns 
 available in 300 mil (TD) or 600 mil (D) ceramic DIP
 or 600 mil plastic DIP (P)

IDT71256 SA
 12-25ns 
 available in 300 mil (P28-2) or 600 mil plastic DIP (P28-1)


Cypress Semiconductor (tree logo)

CY7C199
 8-45ns
 available in 300 mil plastic DIP (P)



The following are major vendors of IC's ...

Digi-Key 
http://www.digikey.com

Hamilton Hallmark
http://www.em.avnet.com/semi/index.html

Insight Electronics
http://www.insight-electronics.com/

Mouser Electronics 
http://www.mouser.com

Newark Electronics 
http://www.newark.com 

Wylie
http://www.wyle.com/



Rubywand