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Re: gEDA-user: SC70-6, which is pin 1?





On Apr 2, 2011, at 12:35 AM, yamazakir2 <yamazakir2@xxxxxxxxx> wrote:

> The datasheet is pretty ambiguous, take a look and let me know what
> you guys think:
> 
> http://focus.ti.com/lit/ds/symlink/sn74lvc1g3157.pdf

Page 1 and 18 show dip ordering.

And the index mark refers to the bar on the top.  So placing the component top side up and the bar to the left.  Pin 1 is the left most pin closest to you.

The bar in fact is adjacent to pin6 as well but apply the dip ordering and you'll be safe.

> 
> On Fri, Apr 1, 2011 at 5:21 AM, Cullen Newsom <cullennewsom@xxxxxxxxx> wrote:
>>   Have you got a part number for it? What's inside? You could use a DMM
>>   to confirm, if you consider its internals. Your guess of bottom left
>>   seems reasonable.
>>   -CN
>> 
>>   On Fri, Apr 1, 2011 at 4:13 AM, yamazakir2 <[1]yamazakir2@xxxxxxxxx>
>>   wrote:
>> 
>>     I'm guessing based off that mark the bottom left pin is pin 1. The
>>     datasheet isn't clear. Does anybody know for sure if thats pin 1?
>>     _______________________________________________
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>> References
>> 
>>   1. mailto:yamazakir2@xxxxxxxxx
>>   2. mailto:geda-user@xxxxxxxxxxxxxx
>>   3. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>> 
>> 
>> 
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>> 
> 
> 
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