[sdiy] Mysterious can IC's

[Roy J. Tellason]

On Saturday 10 December 2005 01:42 am, Aaron Lanterman wrote:
> I have a set of mysterious toldstool like circular ICs. They're black,
> with rounded tops, and they have 8 pins. They have a labelling that looks
> like an italics f, 

That's Fairchild.

> then a micro symbol, followed by a capitol L, and the numbers:
>
> 91428-6926 (3x)
> 91428-6934 (5x)
> 91428-6616
> 90028-731

Those first ones at least look like the uL914s I referred to in an earlier 
post.  "Dual 2-input NOR gate",  with each gate basically being a pair of 
transistors,  one collector resistor of a few hundred ohms,  the collector 
point being the gate's output,  a resistor in series with each base also of a 
few hundred ohms,  them being the gate inputs.

Not sure about the rest of that stuff,  though.

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin