Waht is an MC1806 ?

[Tony Duell]

> The 1969 Motorola Semiconductor Data Book lists the MC1806 as
> DTL quad 2 input AND gate (no inversion), pinout as you inferred (outputs 3,6,8,11).

Argh, I have the 1968 databook (seriously!).

I am suprised it's an AND gate, but it could make sense. Basically, there 
has to be a way to force the output low (to turn off the transistor 
connected there, which drives an HPIB data line). That means it has to be 
an AND or a NOR gate. Turns out I was wrong guessing the data had to be 
inverted going through this gate.

Thanks for the info, I'll figure out the rest of the board...



-tony