It doesn't even shunt across; it's just 16 pins in a DIL package
floating? Strange. If it were a manufacturing test, one wouldn't expect
it would show up in production machines?
Yes. It is just 16 pins unconnected to each other.
As I mentioned some messages ago it is used as a connector.
Pin-out?
Data sheet?
And come to think of it, I bet those dummy chips were used for
training people to hand stuff boards as well.
The Amstrad PCW8256 (word processor) came with 256K of RAM but could be
expanded to
512K essentially by adding another 8 41256 DRAM chips. Some companies in the UK
sold the
9-chip
On 08/06/2015 02:25 PM, William Donzelli wrote:
It could also be a chip used to test an auto-insertion machine or wave
solder machine. If memory serves, they'll use correctly pinned but fake
parts to test those processes before moving to the more expensive real
thing.
Yes, there were a few
Amazingly there is nothing inside that 16pin DIL package. No silicon chip,
no thick-film resistor
network, nothing. It is just a package with the pins.
Are you sure? They might have gotten a really good deal on
Well, I've not x-rayed one, but I could detect no conductivity or diode
It could also be a chip used to test an auto-insertion machine or wave
solder machine. If memory serves, they'll use correctly pinned but fake
parts to test those processes before moving to the more expensive real
thing.
Yes, there were a few companies that made dummy chips for exactly that
On Thu, 6 Aug 2015, Eric Smith wrote:
On Thu, Aug 6, 2015 at 10:22 AM, tony duell a...@p850ug1.demon.co.uk wrote:
Amazingly there is nothing inside that 16pin DIL package. No silicon chip, no
thick-film resistor
network, nothing. It is just a package with the pins.
Are you sure? They might
As a total aside, on some HP boards there is a 16 pin DIL package with the
part number 1260-0339.
Any ideas what that chip is?
What chip?
Amazingly there is nothing inside that 16pin DIL package. No silicon chip, no
thick-film resistor
network, nothing. It is just a package with the pins.
This all assumes it is a TTL and not an ECL or even
and analog chip, such as an opamp.
Or a resistor network, diode network, transistor array, programmed PROM,
microcontroller,
etc, etc, etc.
As a total aside, on some HP boards there is a 16 pin DIL package with the part
number 1260-0339.
Tony wrote...
-
As a total aside, on some HP boards there is a 16 pin DIL package with the
part number 1260-0339.
Any ideas what that chip is?
-
Is it on any boards related to the HP1000 or 21MX computers? If so... what
board?
J
On 08/04/2015 1:48 PM, dwight wrote:
This all assumes it is a TTL and not an ECL or even
and analog chip, such as an opamp.
Dwight
It might be possible to identify it a bit. Using the Diode Test of your
basic multi-meter you can probably figure out if
From: j...@mercury.lcs.mit.edu
snip
It's a 16-pin DIP, with the following on it (in three separate lines):
1028126, D39315-A, and CS9336P. The first number looks like the numbers
I've seen on a couple of other un-identified chips, made by TRW. (I hope they
aren't something classified
So, I took Tony's advice (about parts) to heart, and have been stocking up on
all sorts of things. (Ironically, I now have a _far_ better supply of parts
that I had access to, back in the day, at LCS at MIT! But that's a rant for
another day.)
As part of that, I've bought up a number of IC
On 08/04/2015 11:40 AM, John Robertson wrote:
You could always get one of those inexpensive TTL device identifiers to
see if the house number crosses over:
http://www.ebay.com/itm/281682288251
My Xeltek programmer has that function--and it works for some common TTL
ICs, but gets a lot less
This all assumes it is a TTL and not an ECL or even
and analog chip, such as an opamp.
Dwight
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