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FYI: "huskerfan" is a reliable supplier on eBay in the US. I have
used them several times.<br>
<br>
'the-cases' has the 646 part also: 2 for $2 (+ shipping).<br>
<br>
--John<br>
<br>
<br>
<br>
On 05/23/2015 05:37 AM, Richard Cini wrote:
<blockquote cite="mid:D185EC3C.1533D%***@verizon.net"
type="cite">
<div>
<div>
<div>If you look on eBay for “Huskerfan42011” he has them for
$10 for 10. I just bought a sleeve of them to have them in
stock.</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div>Rich</div>
<div><br>
</div>
<div>--</div>
<div>Rich Cini</div>
<div>Collector of Classic Computers</div>
<div>Build Master and lead engineer, Altair32 Emulator</div>
<div><a moz-do-not-send="true"
href="http://www.classiccmp.org/cini">http://www.classiccmp.org/cini</a></div>
<div><a moz-do-not-send="true"
href="http://www.classiccmp.org/altair32">http://www.classiccmp.org/altair32</a></div>
</div>
</div>
</div>
<div><br>
</div>
<span id="OLK_SRC_BODY_SECTION">
<div style="font-family: Calibri; font-size: 11pt; text-align:
left; color: black; border-width: 1pt medium medium;
border-style: solid none none; border-color: rgb(181, 196,
223) -moz-use-text-color -moz-use-text-color; padding: 3pt 0in
0in;"><span style="font-weight: bold;">From: </span> Tom
Lafleur <<a moz-do-not-send="true"
href="mailto:***@lafleur.us">***@lafleur.us</a>><br>
<span style="font-weight: bold;">Reply-To: </span> N8VEM-Post
<<a moz-do-not-send="true"
href="mailto:***@googlegroups.com">***@googlegroups.com</a>><br>
<span style="font-weight: bold;">Date: </span> Saturday, May
23, 2015 at 8:09 AM<br>
<span style="font-weight: bold;">To: </span> N8VEM-Post <<a
moz-do-not-send="true" href="mailto:***@googlegroups.com">***@googlegroups.com</a>><br>
<span style="font-weight: bold;">Subject: </span> Re: [N8VEM:
19635] Parts life notice SN74ALS646<br>
</div>
<div><br>
</div>
<div>
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<div>Ti web site still list the 74als646ant and higher
output 74als646a-1nt as active parts in dip package...
Where the non A version is listed as <span
style="background-color: rgba(255, 255, 255, 0);">OBSOLETE.....</span><br>
<br>
<a moz-do-not-send="true"
href="http://www.ti.com/product/SN74ALS646A/samplebuy">http://www.ti.com/product/SN74ALS646A/samplebuy</a><br>
<div><br>
</div>
<div>i~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~i</div>
<div><br>
</div>
<div>Tom Lafleur</div>
<div><br>
</div>
</div>
<div><br>
On May 23, 2015, at 3:11 AM, Ian May <<a
moz-do-not-send="true" href="mailto:***@gmail.com">***@gmail.com</a>>
wrote:<br>
<br>
</div>
<div>
<div dir="ltr">
<div>The information from TI is that 74XXX646 parts will
no longer be available in DIP packages. The suggested
replacement parts are small outline (DW suffix)
surface mount parts. I bought SN74ABT646ANT parts from
Mouser. They are listed at US $2.22 each while the
SN74LS646NT is US $8.37. As with 74XXX245s only the LS
parts have hysteresis on the inputs, so not using a
74LS646 may have unwanted consequences. Assuming Rich
tested his new board with the <span
style="background-color: rgb(255, 255, 255);"><font
color="#333333"><span style="line-height:
13.42px;">SN74ALS646s he mentioned they are OK</span></font></span>
(and I will find out if ABT parts are OK). I have
attached the advice from TI that I received from
Mouser which lists the devices Mouser has previously
purchased from TI that are subject to the changes
(i.e. this list is a subset).<br>
</div>
Cheers, Ian.<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, May 22, 2015 at 11:42
PM, Richard Cini <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:***@verizon.net"
target="_blank">***@verizon.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt
0pt 0.8ex; border-left: 1px solid rgb(204, 204,
204); padding-left: 1ex;">
<div style="word-wrap: break-word;">
<div style="color: rgb(0, 0, 0); font-family:
Calibri,sans-serif; font-size: 14px;">All —</div>
<div style="color: rgb(0, 0, 0); font-family:
Calibri,sans-serif; font-size: 14px;"><br>
</div>
<div><span style="color: rgb(0, 0, 0);
font-family: Calibri,sans-serif; font-size:
14px; white-space: pre-wrap;"> </span><font
style="color: rgb(0, 0, 0);"
face="Calibri,sans-serif">For those building
the Dual IDE board, I received an EOL notice
from </font>Digi-Key for the <span
style="background-color: rgb(255, 255, 255);"><font
color="#333333"><span style="line-height:
13.42px;">SN74ALS646 part. Last purchase
date is 10/8/2015. Downside is the cost —
$9 each when I ordered them a few weeks
ago.</span></font></span></div>
<div><span style="background-color: rgb(255, 255,
255);"><font color="#333333"><span
style="line-height: 13.42px;"><br>
</span></font></span></div>
<div style="color: rgb(0, 0, 0); font-family:
Calibri,sans-serif; font-size: 14px;">
<div>Rich</div>
<div><br>
</div>
<div>--</div>
<div>Rich Cini</div>
<div>Collector of Classic Computers</div>
<div>Build Master and lead engineer, Altair32
Emulator</div>
<div><a moz-do-not-send="true"
href="http://www.classiccmp.org/cini"
target="_blank">http://www.classiccmp.org/cini</a></div>
<div><a moz-do-not-send="true"
href="http://www.classiccmp.org/altair32"
target="_blank">http://www.classiccmp.org/altair32</a></div>
</div>
</div>
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