[sdiy] Weird old logic chips & transistors

[Roy J. Tellason]

On Saturday 03 December 2005 06:47 pm, Mike Brown wrote:
> I had a bunch of motorola logic chips with the MC prefix, which I was told
> were MECL logic.
>
> they were ancient... definitely pre TTL.
>
> MB

Motorola used that prefix for a bunch of different series including ECL, DTL, 
RTL,  and several different series of TTL before the 7400 stuff took over the 
market.  There were several different series of ECL,  too,  now that I think 
of it.

Never had the least inclination to try and work with ECL,  nohow.

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