[sdiy] 76477 "N" vs "NF"

[Grant Richter]

Hi John,

Love those Dark Stars.

The adapt-a-chip adapters available from Mouser and DigiKey cost as much as
the chips themselves. They make 28 pin 0.3" skinny to 0.6" adapter sockets,
also expensive and both chips are 0.1" centers.

Sometimes with wire wrap sockets, the long wrap tails can be bent outward to
fit a larger outline. But finding a wire wrap socket for a 0.4" 70 mil could
be a challenge.

This trick works well for putting a DIP8 inside a top-hat can pattern.

Another option is to spin a 0.32" thick PC board with 0.4" footprint in the
middle and Mill-Max pins along the 0.1" centers. If you do it yourself, it
may be cheaper than commercial adapters.

> From: John Blacet <john at blacet.com>
> Date: Tue, 19 Nov 2002 10:52:41 -0800
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] 76477 "N" vs "NF"
> 
> The 76477N is a 0.6" wide, 0.1" pitch IC. The 76477NF is 0.4" wide, .070
> pitch.
> 
> Can anyone with a data sheet for the "NF" confirm that the pinout is the
> same?
> 
> Can anyone suggest a way to use the "NF" on a board designed for the
> "N"?
> 
> --
> Regards,
> --/////--
> John Blacet
> Blacet Research
> http://www.blacet.com
> 
> 
>