What kind of IC is this - part two

[Philip Pemberton]

Oliver Lehmann wrote:
> http://pics.pofo.de/gallery/v/S8000/S8000_boards/P1070269.JPG.html
> 
> Wild guessing.... resistornetwork? capacitornetwork (was something like
> that around?)?

That logo belongs to Data Delay Devices, who are still in business:
  <http://www.datadelay.com/>

Their part number index lists the DDU4:
  <http://www.datadelay.com/asp/alphanum.asp>
With a datasheet here:
  <http://www.datadelay.com/datasheets/ddu4.pdf>

But there's nothing about a DDU-4-7992 in there at all. Based on the naming 
convention, I'd be inclined to think it was a 7-output delay line, with a 
total delay of 992 nanoseconds. 992ns seems a bit dubious though.

It might be worth emailing their tech support department (email address is at 
the top of the part number index) and asking them about the meaning of the 
'7992' part number suffix.

-- 
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/