can anyone identify this 32KHZ crystal ( has datasheet?)

Dear Mike,

We found the datasheet is as following with SOP package.

Yes. The Dallas official is show the 16 pins SOP package.

But for the pin (5,6,7,8 and 12,11,10,9 ) is NC ( no connect )

Can you pleased try in your application to see weather the IC is workable ?

And we have check with the updated version of the DS32KHZ.

They don't have mention the SOP package. The following is the datasheet for your reference :

Waiting for your idea !

Thanks !

Patrick

"mike" ???????:44aeb938$0$878$ snipped-for-privacy@news.orange.fr...

Since you haven't provided a *part number* I can't help much but why not simply ask your supplier ?

Is your data sheet up to date ?

Graham

Graham, If I knew the part number of this IC I wouldn't have needed to post here. In all his wisdom, Google, would have probably been able to point to a data sheet. I had provided the only info I know from the IC screen prints. My supplier is helping. He believes these are DS32KHZS from Maxim but his data sheet also only shows a 16 pin SOP part. He has invited me to test one which is commendable.

Which brings me to a new question? Faced with an unknown chip, is there a way I could check from say DVM readings, which pin(s) are GND, NC, and which Vcc so that I could test for outputs without destroying the device?

I have a Maxim/Dallas DS32KHZ (DIP) version to compare against. I have already compared resistance of pin pairs an find differences? On the known source chip, I have 0Ohm resistance between pins marked NC and MOhm resistance between others. On the unknown IC I have MOhm resistance between all. So I might conclude that none are NC, However it doesn't help to find Vcc and GND. Would it be safe to just probe with say 5v until I see a wave on another pin?

simply

Google got me to this instantly. It shows 8 pins.

On the data sheet

there is this note...... " PACKAGE INFORMATION (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package information, go to "

Which isn't very helpful but why don't you simply ask Maxim ?

Graham

On Fri, 07 Jul 2006 21:42:48 +0200, mike put finger to keyboard and composed:

This URL suggests they are probably fakes:

- Franc Zabkar

--
Please remove one 'i' from my address when replying by email.

Thanks Frank, Poor Manfred got stung as well. this was in 2004. ---- Manfred POMUTZ (Germany) wrote to the seller (China): Dear Jacky, you sent me DS32KHZ (8-pin SMD). (PHILIPINES 32KHZ 0111A6 550AD) Please send me pin-connection, I don't found 8-pin connection ---- As you can see the markings are the same format as on those I got. I have a request for info out with Maxim to check but until I get confirmation that they are OK or I get my money back, don't buy from Town Target Technology.

Any one know if there is a Bad Seller blacklist newsgroup that aught to be posted with the details? Mike

Franc Zabkar wrote:

On Mon, 10 Jul 2006 00:42:56 +0200, mike put finger to keyboard and composed:

I suspect Town Target were stung as well. They are probably only chip brokers, not necessarily technical people. FWIW, I have seen fakes at usbid.com, too. Let us know if you get your money back, including freight.

- Franc Zabkar

--
Please remove one 'i' from my address when replying by email.

I think you are probably right. I'll let you know how I get on.

Here is the reply from Maxim/Dallas:

The 8-pin SO is a package that was never sold by Dallas/Maxim. They were stolen parts, and will not operate properly. You should purchase parts only from authorized distributors.

Regards,

Curtis Rutter Applications Support - Mixed-Signal II Dallas Semiconductor/Maxim Integrated Products voice: 972-371-xxxx

Dear Mike,

It seem we have get the copy stock from warehouse. Pls worry. Refund is ready for you.

On the other hand, we may able to supply the SOP-16 DS32KHZ from Hong Kong authorized distributor of Dallas.

Are yo interested of this ? If not, we may just refund payment for you. We also get lost in the delivery charge and cost of the materials. But we will try our best to refund the payment for our customer in order to ensure they can have their customer rigth.

Thanks !

Patrick

"mike" ???????:44b28f1b$0$898$ snipped-for-privacy@news.orange.fr...

Dear Mike,

OK. We have refund the payment for you today.

Sorry for our mistake.

Thanks !

Patrick

"Patrick - townt.com" ¼¶¼g©ó¶l¥ó·s»D:44b2d186$1 snipped-for-privacy@rain.i-cable.com...

I would like to confirm that the seller has refunded me for the bad parts in double quick time. It is good to see that there are honest dealers around who will admit a mistake. Many thanks Patrick, and I think I could recommend you to others without reserve. Just make sure that you give/get a detailed description of the required parts to ensure satisfaction. Regards, Mike

Patrick - townt.com wrote: