LM13900=LM13700?

[patchell]

I just did a search on the National Semiconductor Web site, and seem to have come up empty on the lm13900.  Is it posible
that it may be a misprint?  A hand written 7 could look like a 9?

Rob wrote:

> Does anyone know if these units are interchangeable? I wasn't able to find the 13900, but I can get loads of the 13700s.
>
> Let me know because I am having a prob getting the data sheets for the 13900.
>
> Rob

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