Sequencer Update

[Magnus Danielson]

>>>>> "j" == jhaible  <jhaible at metronet.de> writes:

 j> Nothing more than a week ago. I've made a simulation with 2 cascaded
 j> 4017 chips, because PSpice aparently doesn't have a model for
 j> the 4067. A few glitches, but it should work.

Some very small glitches is to be expected anyways, a simple lowpass
filter could remove these glitches without greatly interfering with
the function. 

 >> Unfortunately, there doesn't seem to be anyplace online with the full
 >> catalog of 4000 series datasheets (someone please correct me if I'm
 >> wrong) . Harris requires faxing for those chips, and Fairchild doesn't
 >> have everything listed. I'm curious to hear about your part selection
 >> for this, as it's a cool idea.

Check out Philips, and you should get them from Motorola as well.
I also think National has them...

 j> I think I will use the 4067, plus a binary counter and some reset logic.

 j> I'm on hollidays this week, and I have borrowed a CMOS data book from
 j> work - this is very helpful.

I don't know how I would survive without my RCA CMOS databook from
early 80thies.

Cheers,
Magnus