1M x 4-bit DRAM 20-pin DIP

[Keith M]

I'm searching for a source of a DRAM memory IC that would have the
following specs:

20-pin DIP memory chips

(16) 1meg x 4-bit dips make up a bank of 8mb.
Should be 60-ns
Fast Page Mode
non-parity

An example would be Toshiba TC514400AP-60.

Other manufacturers might use the following base part numbers:

Fujitsu MB : 814400
Goldstar GM : 71C4400
Hitachi HM : 514400
Hyundai HY : 514400
Micron MT : 4C4001
Mitsubishi M5M: 44400

Any idea where I could find these would be appreciated.

I'm even up to pulling the DRAM from some old boards, if I can find
someplace that has boards that contain these chips. Maybe an old
printer buffer memory card or something.

Thanks!

Keith

 

[JW]

On Mon, 31 Mar 2008 13:57:28 GMT Keith M
<keithvz@yanktheobvious.verizon.net> wrote in Message id:
<c56Ij.8187$QW6.7378@trnddc07>:

I'm searching for a source of a DRAM memory IC that would have the
following specs:

20-pin DIP memory chips

(16) 1meg x 4-bit dips make up a bank of 8mb.
Should be 60-ns
Fast Page Mode
non-parity

An example would be Toshiba TC514400AP-60.

Other manufacturers might use the following base part numbers:

Fujitsu MB : 814400
Goldstar GM : 71C4400
Hitachi HM : 514400
Hyundai HY : 514400
Micron MT : 4C4001
Mitsubishi M5M: 44400

Any idea where I could find these would be appreciated.

Try http://www.findchips.com/

 

[Keith M]

JW wrote:

Try http://www.findchips.com/

Thanks for the link.

With a few notable exceptions, it seems that the majority of the
companies that findchips searches are those "allchips4u.com"-type of
sites where you must fill out an RFQ form for each and every chip --
just to find out the cost. Then, there are large minimum orders (many
are $250+) Furthermore, the chips you get from them are often pulls --
which might be the route I have to go here with trying to source old
chips, but obviously new is better.

Google seems to hit on all those sites already, and I've never had good
luck dealing with most of them.

Thanks anyways

Keith

 

[Mark Zenier]

In article <XHtIj.5856$s27.3451@trnddc02>,
Keith M <keithvz@yanktheobvious.verizon.net> wrote:

JW wrote:

Try http://www.findchips.com/

Thanks for the link.

With a few notable exceptions, it seems that the majority of the
companies that findchips searches are those "allchips4u.com"-type of
sites where you must fill out an RFQ form for each and every chip --
just to find out the cost. Then, there are large minimum orders (many
are $250+) Furthermore, the chips you get from them are often pulls --
which might be the route I have to go here with trying to source old
chips, but obviously new is better.

Google seems to hit on all those sites already, and I've never had good
luck dealing with most of them.

Try Jameco.

And JDR Microdevices if they're still around,
ditto B&D Enterprises

Mark Zenier mzenier@eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)