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Old April 21st 07, 05:39 PM posted to rec.radio.amateur.homebrew
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"Michael Black" wrote in message Generally, 6
pin DIPs are optoisolators.

There must be exceptions, but every time I see one I start
with the assumption that it's an optoisolator.


I vaguely remember Motorola's odd, short-lived
line of linear devices back in the 60s or 70s..
MFCxxx rings a bell. They had attenuators, oddball
audio amps. I think there were some six pin devices,
but they were also an offset lead package.

Pete


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Old April 21st 07, 11:45 PM posted to rec.radio.amateur.homebrew
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Default Need help identifing IC.

"Uncle Peter" ) writes:
"Michael Black" wrote in message
Generally, 6
pin DIPs are optoisolators.

There must be exceptions, but every time I see one I start
with the assumption that it's an optoisolator.


I vaguely remember Motorola's odd, short-lived
line of linear devices back in the 60s or 70s..
MFCxxx rings a bell. They had attenuators, oddball
audio amps. I think there were some six pin devices,
but they were also an offset lead package.

Pete


That was a a really weird line. I seem to recall some were actually
four pins. They seemed for much intended for consumer equipment, and
it seemed like they tried to fit the package to the device, rather than
have something like a 14 pin package and have everything fit in it no
matter how few pins they actually needed.

I think some of the line included dividers that would run off 12v,
intended for music organs.

I honestly did not include those in my "there must be exceptions".
I'm not sure now if I put that in just to be sure, or I was thinking
of something (that I can't remember at the moment) that do come in 6pin
DIPs.

Michael VE2BVW

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