The data sheet s $0.50 ... the chip is $4.00. For I buck more I am  
throwing in the crystal and all the supporting parts ... I went a lot  
farther than Texas to get the chips I have ... the postage on the  
package was 200 baht!  Hey I was just trying to do people a favor and  
make a liittle on it ...


---
cheers ... 73 de brian  riley,  n1bq , underhill center, vermont
   <http://web.mac.com/brianbr/>  Tech Blog
   <http://www.wulfden.org/TheShoppe.shtml>
    Home of the
       K107 Serial LCD Controller Kit   FT817 Power Conditioner Kit
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On Aug 16, 2007, at 9:14 PM, Mike snyder wrote:

> BG Micro sells DTMF decoders for as low as $ 0.50 / piece, the 8870  
> are $
> 4.00.
>
>
>
> On 8/16/07, Brian B. Riley <brianbr@mac.com> wrote:
>>
>> A number of people have asked me where I get my DTMF decoder chips I
>> have referred to in some of my writings and have demonstrated in my
>> presentations. My general answer is ".. wherever and whenever i can
>> find them" ... they are, for some reason, scarce. There are
>> references all over but few people carry them and mots that do want
>> orders in multiples of 1000's ...
>>
>> To keep this from getting too long. I just scored 50 of the Clare
>> MT8870D in 18 pin DIP. They aren't very expensive. I am offering them
>> in small quantities as a 'complete kit' (chip, 18 pin socket, color
>> burst crystal, three precision resistors and 2 caps) for $5 plus  
>> $2 S/
>> H through my website. No bulk sales, limit three kits to a customer.
>>
>> I have found this to be a rock solid chip.  I regularly use these
>> over VHF/UHF FM for remote control and they work very well.
>> Programming is trivial, loop and test one data_valid bit and then
>> read 4 data  bits. Basic Stamp, AVR, PIC, Arduino, you name it. The
>> DataSheet is available from my website also.
>>
>>
>>   <http://www.wulfden.org/SpecialSale/index.shtml>
>>
>>
>> ---
>> cheers ... 73 de brian  riley,  n1bq , underhill center, vermont
>>   <http://web.mac.com/brianbr/>  Tech Blog
>>   <http://www.wulfden.org/TheShoppe.shtml>
>>    Home of the
>>       K107 Serial LCD Controller Kit   FT817 Power Conditioner Kit
>>       Tab Robot Laser Tag Kit            MSP430 Chips and Connectors
>>       Propeller Robot Controller         SX48 "Tech Board" Kit
>>       PICAXE Chips, boards, and accessories
>>
>>
>> --
>> http://www.piclist.com PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>
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> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist

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