[sdiy] CD4067 24-pin DIP pin spacing

[Eric Brombaugh]

Google is your friend:

http://www.onsemi.com/PowerSolutions/search.do?searchString=cd4067&searchType=others&tabbed=Y&clearFilters=Y

Looks like new stock 4067 equivalents in plastic DIP packages are in a  
0.6" package, as well as SOIC-24 packages for those who prefer SMD. I  
don't recall that I've ever seen a 0.3" 24-pin package on those old- 
style 4000-series CMOS parts though. My guess would be that the die  
were too large to squeeze down into the narrow bodies and still allow  
room for the leadframe.

As for general availability of 0.3" DIP packages with pins > 16, look  
no further than your favorite Atmel or Microchip processors where you  
can find many parts in 0.3" plastic DIPs with 28-pins. Many other  
manufacturers used these in the past when DIPs were more common in  
mass-produced equipment as well. These days most new stuff is SMD of  
course, with chip-scale (QFN etc) packages appearing to dominate the  
latest releases.

Eric

On Jul 3, 2009, at 6:14 PM, Graham Atkins wrote:

> Not dumb,
>
> Always refer to the data sheet, but I expect the 4067 will be 0.3".
>
> According to Wicki, packages up to 24 or 28 pins can have 0.3"
> spacing and 24 upwards 0.8" spacing.
>
> http://en.wikipedia.org/wiki/Dual_in-line_package
>
> Questions often come up regarding IC properties, especially with
> the amount of package types now avilable from major vendors.
> The most recent data sheets give the best info, the "letters" around
> the type number are critical to the exact specs.
>
> Graham
>
> On 3 Jul 2009, at 19:40, David G. Dixon wrote:
>
>> Here's a couple of dumb questions, but I can't seem to find the  
>> answers on
>> the web:
>>
>> Does the CD4067 24-pin DIP, 16-channel mux/demux have 0.3" or 0.6"  
>> pin row
>> spacing?
>>
>> Do all 24-pin IC's share the same pin spacing, or are some 0.3" and  
>> some
>> 0.6"?
>>
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