24 Feb
2022
24 Feb
'22
8:29 a.m.
Hi
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
Thanks.
24 Feb
24 Feb
9:10 a.m.
On 2022-02-24 9:29 a.m., Clemar Folly via cctalk wrote:
Hi
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
Thanks.
What is the native habitat of this chip? Mother board, I/O, calculator
or clock,washing machine, toaster, car?
Ben.
9:54 a.m.
is there a date code?
On Thu, Feb 24, 2022 at 12:10 PM ben via cctalk <cctalk at classiccmp.org>
wrote:
On 2022-02-24 9:29 a.m., Clemar Folly via cctalk
wrote:
Hi
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
Thanks.
What is the native habitat of this chip? Mother board, I/O, calculator
or clock,washing machine, toaster, car?
Ben.
10:06 a.m.
> On 2022-02-24 9:29 a.m., Clemar Folly via cctalk
wrote:
>> Hi
>>
>> I'm looking for information about Texas Instruments TB-759933 IC.
>>
>> Does anyone have the datasheet or any other information about this IC?
>>
>> Thanks.
>
> What is the native habitat of this chip? Mother board, I/O, calculator
> or clock,washing machine, toaster, car?
> Ben.
>
Sounds like a house number to me. Can you post a photo?
--Chuck
10:08 a.m.
I checked my 70's era IC books for TI. There is no TB-759933 that I can
find.
Bill
On Thu, Feb 24, 2022 at 12:54 PM Bill Degnan <billdegnan at gmail.com> wrote:
is there a date code?
On Thu, Feb 24, 2022 at 12:10 PM ben via cctalk <cctalk at classiccmp.org>
wrote:
On 2022-02-24 9:29 a.m., Clemar Folly via cctalk
wrote:
Hi
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
Thanks.
What is the native habitat of this chip? Mother board, I/O, calculator
or clock,washing machine, toaster, car?
Ben.
10:16 a.m.
Could be speaking ahead of answers here, but TI had an entire internal
PN system for their parts in the 70s (I dealt with it in 75) and they
did it to stop people from doing component level repairs on such as TI
silent 700s.? I don't think there's a common P/N part in those.
I couldn't get the internal to "real public" part number equivalency
list and I was just a wet behind the ears EE trying to maintain 40 of
them for a college, and quite pissed off that they did that. Some were
figured out but most weren't.
They wanted upwards of the value of the units for parts, and were aholes
in my book.? The Silent 700s weren't the only thing they pulled that on.
So if you have a schematic and what it came out of someone here or on a
circuits or specialized list which deals with TI shenanigans might be
able to guess what it is and what would replace it.
May not be this, someone may have a book with it in it, but I avoid TI
at all costs for this reason. Enough problems with old electronics w/o
dealing with crap like this.
thanks
Jim
On 2/24/2022 10:01 AM, ben via cctalk wrote:
On 2022-02-24 9:29 a.m., Clemar Folly via cctalk
wrote:
Hi
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
Thanks.
I forgot to ask, What kind of package?
Ben.
10:16 a.m.
On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
A search shows this question was posted over here, with a picture:
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
It looks like a home-made board for a plug-in ROM expansion for we-are-not-told.
The "TB 759933" is 14-pin DIP, dated coded 7226, has a house number of "239
2100", but it's on a board with a 27256 from 1985.
It looks like somebody hacked up this board with on-hand parts.
60 seconds of reverse-enginerring from the limited view in the picture suggests it's
likely involved in the address decoding to select the on-board EPROM. The 759933
interconnects with a 74LS10. The LS10 appears to have connections to the chip-select and
output-enable of the 27256 EPROM.
TB 759933 is not a standard TI number but TI sometimes identified parts they were
second-sourcing by embedding the original number in an expanded number.
So a guess is this is a 933 DTL dual 4-input (AND function) expander, being used
not-strictly-correctly to drive a TTL input.
The 933 should be basically 2*4 diodes.
A complete reverse-engineering of this trivial board would likely explain the overall
intended function.
10:20 a.m.
On Feb 24, 2022, at 1:16 PM, Brent Hilpert via cctalk
<cctalk at classiccmp.org> wrote:
On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
Wow, that's a sorry looking board. It looks like it was assembled by someone using a
soldering gun and acid-core solder. But most plumbers would do better work than that.
paul
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
A search shows this question was posted over here, with a picture:
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
10:24 a.m.
I have a pretty complete set of TI books, there are no chips that begin
with TB-nnnnn. There are many chips that start with T, but none that match
your chip ID
On Thu, Feb 24, 2022 at 1:21 PM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:
On Feb 24, 2022, at 1:16 PM, Brent Hilpert via
cctalk <
cctalk at classiccmp.org> wrote:
On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
Wow, that's a sorry looking board. It looks like it was assembled by
someone using a soldering gun and acid-core solder. But most plumbers
would do better work than that.
paul
I'm looking for information about Texas Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
A search shows this question was posted over here, with a picture:
10:44 a.m.
The thread with the photograph had an Ebay source for the part.
https://www.ebay.com/itm/151010204380
doesn't help with function, or with the solder blob jumper purpose (or
booboo) but can get the part for some amount if they ship to Brazil.
On 2/24/2022 10:24 AM, Bill Degnan via cctalk wrote:
I have a pretty complete set of TI books, there are no
chips that begin
with TB-nnnnn. There are many chips that start with T, but none that match
your chip ID
On Thu, Feb 24, 2022 at 1:21 PM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:
>
>> On Feb 24, 2022, at 1:16 PM, Brent Hilpert via cctalk <
> cctalk at classiccmp.org> wrote:
>> On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
>>> I'm looking for information about Texas Instruments TB-759933 IC.
>>>
>>> Does anyone have the datasheet or any other information about this IC?
>>
>> A search shows this question was posted over here, with a picture:
>>
> https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
>
> Wow, that's a sorry looking board. It looks like it was assembled by
> someone using a soldering gun and acid-core solder. But most plumbers
> would do better work than that.
>
> paul
>
>
>
11:44 a.m.
This chip is from a cartridge for the Atari 2600. The board is not mine.
I'm trying to help identify the IC.
It's the PCB of the AtariAge post.
I had already looked in the Texas data book and found nothing.
Thanks.
On Thu, Feb 24, 2022 at 3:44 PM jim stephens via cctalk <
cctalk at classiccmp.org> wrote:
The thread with the photograph had an Ebay source for
the part.
https://www.ebay.com/itm/151010204380
doesn't help with function, or with the solder blob jumper purpose (or
booboo) but can get the part for some amount if they ship to Brazil.
On 2/24/2022 10:24 AM, Bill Degnan via cctalk wrote:
I have a pretty complete set of TI books, there
are no chips that begin
with TB-nnnnn. There are many chips that start with T, but none that
match
your chip ID
On Thu, Feb 24, 2022 at 1:21 PM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:
>
>> On Feb 24, 2022, at 1:16 PM, Brent Hilpert via cctalk <
> cctalk at classiccmp.org> wrote:
>> On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
>>> I'm looking for information about Texas Instruments TB-759933 IC.
>>>
>>> Does anyone have the datasheet or any other information about this IC?
>>
>> A search shows this question was posted over here, with a picture:
>>
>
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
>
> Wow, that's a sorry looking board. It looks like it was assembled by
> someone using a soldering gun and acid-core solder. But most plumbers
> would do better work than that.
>
> paul
>
>
>
11:55 a.m.
On Thu, Feb 24, 2022, 12:47 PM Clemar Folly via cctalk <
cctalk at classiccmp.org> wrote:
This chip is from a cartridge for the Atari 2600. The
board is not mine.
I'm trying to help identify the IC.
It's the PCB of the AtariAge post.
I had already looked in the Texas data book and found nothing.
Then it is almost certainly a custom ROM of some flavor
Warner
Thanks.
On Thu, Feb 24, 2022 at 3:44 PM jim stephens via cctalk <
cctalk at classiccmp.org> wrote:
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
The thread with the photograph had an Ebay source
for the part.
https://www.ebay.com/itm/151010204380
doesn't help with function, or with the solder blob jumper purpose (or
booboo) but can get the part for some amount if they ship to Brazil.
On 2/24/2022 10:24 AM, Bill Degnan via cctalk wrote:
IC?
I have a pretty complete set of TI books, there
are no chips that begin
with TB-nnnnn. There are many chips that start with T, but none that
match
> your chip ID
>
> On Thu, Feb 24, 2022 at 1:21 PM Paul Koning via cctalk <
> cctalk at classiccmp.org> wrote:
>
>>
>>> On Feb 24, 2022, at 1:16 PM, Brent Hilpert via cctalk <
>> cctalk at classiccmp.org> wrote:
>>> On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
>>>> I'm looking for information about Texas Instruments TB-759933 IC.
>>>>
>>>> Does anyone have the datasheet or any other information about this
>>
>> A search shows this question was posted over here, with a picture:
>>
>
>
> Wow, that's a sorry looking board. It looks like it was assembled by
> someone using a soldering gun and acid-core solder. But most plumbers
> would do better work than that.
>
> paul
>
>
>
11:32 a.m.
2392100 Look like an IBM house number for a 7400 quad NAND
Paul.
On 2022-02-24 14:16, Brent Hilpert via cctalk wrote:
On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk
wrote:
I'm looking for information about Texas
Instruments TB-759933 IC.
Does anyone have the datasheet or any other information about this IC?
A search shows this question was posted over here, with a picture:
https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
It looks like a home-made board for a plug-in ROM expansion for we-are-not-told.
The "TB 759933" is 14-pin DIP, dated coded 7226, has a house number of
"239 2100", but it's on a board with a 27256 from 1985.
It looks like somebody hacked up this board with on-hand parts.
60 seconds of reverse-enginerring from the limited view in the picture suggests it's
likely involved in the address decoding to select the on-board EPROM. The 759933
interconnects with a 74LS10. The LS10 appears to have connections to the chip-select and
output-enable of the 27256 EPROM.
TB 759933 is not a standard TI number but TI sometimes identified parts they were
second-sourcing by embedding the original number in an expanded number.
So a guess is this is a 933 DTL dual 4-input (AND function) expander, being used
not-strictly-correctly to drive a TTL input.
The 933 should be basically 2*4 diodes.
A complete reverse-engineering of this trivial board would likely explain the overall
intended function.
11:51 a.m.
On 2022-Feb-24, at 11:32 AM, Paul Berger via cctalk wrote:
On 2022-02-24 14:16, Brent Hilpert via cctalk wrote:
> On 2022-Feb-24, at 8:29 AM, Clemar Folly via cctalk wrote:
>> I'm looking for information about Texas Instruments TB-759933 IC.
>>
>> Does anyone have the datasheet or any other information about this IC?
>
> A search shows this question was posted over here, with a picture:
> https://atariage.com/forums/topic/331769-unknown-cart-ic-please-i-need-some…
>
> It looks like a home-made board for a plug-in ROM expansion for we-are-not-told.
> The "TB 759933" is 14-pin DIP, dated coded 7226, has a house number of
"239 2100", but it's on a board with a 27256 from 1985.
> It looks like somebody hacked up this board with on-hand parts.
>
> 60 seconds of reverse-enginerring from the limited view in the picture suggests
it's likely involved in the address decoding to select the on-board EPROM. The 759933
interconnects with a 74LS10. The LS10 appears to have connections to the chip-select and
output-enable of the 27256 EPROM.
>
> TB 759933 is not a standard TI number but TI sometimes identified parts they were
second-sourcing by embedding the original number in an expanded number.
>
> So a guess is this is a 933 DTL dual 4-input (AND function) expander, being used
not-strictly-correctly to drive a TTL input.
>
> The 933 should be basically 2*4 diodes.
>
> A complete reverse-engineering of this trivial board would likely explain the overall
intended function.
2392100 Look like an IBM house number for a 7400 quad
NAND
Paul.
Glad you said that, I wondered whether that might be IBM, but I'm not very familiar
with their numbers and don't have a xref.
7400 makes some sense with the board: pins 1&2 and 4&5 are blobbed together, i.e.
acting as inverters; and the interconnections with the LS10 as far as can be seen appear
to then make sense as outputs-inputs.
792
days inactive
792
days old
14 comments
9 participants
participants (9)
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bfranchuk＠jetnet.ab.ca -
bhilpert＠shaw.ca -
billdegnan＠gmail.com -
cclist＠sydex.com -
clemarjr＠gmail.com -
imp＠bsdimp.com -
jwsmail＠jwsss.com -
paulkoning＠comcast.net -
phb.hfx＠gmail.com