Re: mystery dac

John Larkin wrote:
I'm trying to reverse-engineer, or at least understand, an old hunk of
military electronics, part of an aircraft heads-up display. One part
on the schematic seems to be a 12-bit DAC with internal data latches.
The part number seems to be DAC871 or possibly DAC671; it's a bad
scan of a bad Xerox. Heck, there's a chance it's a DAC571.

It looks like a 24-pin package with D0..D11 on pins 1..12
respectively, and D0 looks to be the MSB!

That exactly the description of the Micro Networks (an ICS company)
DAC87. I don't know what to say about the "1" after the 87. Is it in
a ceramic side-brazed DIP package? Oh, I forgot, you're only looking
at a schematic, right? Would you like a copy of the data***? Done.

Winfield.

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