Wnated : Pinout for MC6881 or MC3449

[Brent Hilpert]

... just put up the following:

  http://www3.telus.net/~bhilpert/tmp/XC6881.gif

If you need more electrical specs let me know.


Tony Duell wrote:
> 
> Does anyone have the pinout for the Motorola MC6881 or MC3449 chip? (16
> pin DIL package) (Those 2 devices are equivalents, the ones I have are
> marked with both numbers.). From what I can tell, it's a triple
> bidirectional bus switch.
> 
> They are used in the HP37201 HPIB extender, HP seem to have created
> separate data buses for the memroy and I/O chips. I guess this device is
> on-topic here, mine dates from 1979, a pair of them allow an HPIB bus to
> be fed over various types of serial link, including asynchronous and
> synchronous modems.
> 
> -tony