Signetics N8251 source?

Karl-Wilhelm Wacker kwwacker at
Sun Jul 24 12:13:41 CDT 2016


  By the description, it is a 1 of 10 decoder chip.

  Have you looked to see if it pinout compatable
with a 7442?


----- Original Message ----- 
From: "Mattis Lind" <mattislind at>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at>
Sent: Sunday, July 24, 2016 5:01 AM
Subject: Signetics N8251 source?

> After successfully repairing the G231 module of the MM11-L set I continued
> with the next one. This one was not able to access addresses ending 0100
> (binary). Luckily it was not the transistors arrays that were bad but the
> selector chip. A Signetics N8251 chip.
> I found a source on ebay at $4.95 each plus $13 shipping. A little bit to
> much for my taste (although I could make an offer)
> Anyone know of a cheaper source? I could use five or ten maybe.
> /Mattis 

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