[sdiy] Mystery IC

[Neil Johnson]

David,

> I have little bag of a mysterious chip which I do not know
> how to identify. They are an 8pin DIP labelled TL487CP,
> with a texas Intruments logo.

A quick search shows up the TL487 may be a level detector.  For example:

http://www.tech-systems-labs.com/heathkitparts.htm
http://www.d8apro.com/heath3.htm

A search on the IEEE website shows:

TL487:  "Five-step analog level detector is a log-input version of TI's TL489"

So that might give you something a bit more to go on.

Neil


--
http://www.njohnson.co.uk

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