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From: al davis <ad252 AT freeelectron DOT net>
To: geda-user AT delorie DOT com
Subject: [geda-user] T flip-flop
Date: Sat, 10 Aug 2013 16:15:39 -0400
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Reply-To: geda-user AT delorie DOT com

I have a need for a "T" flip-flop ......   to map a momentary 
pushbutton to on or off.

The application needs 20 of them in a tight space, preferably 
arranged in 4 groups of 5.

Looking for suggestions of a chip to do this, with a minimum 
package count and space requirement.

Wishing for a "hex T flip-flop", but I can't find it.

The best I can find seems to be a dual JK flipflop.  That's 10 
packages.

I found a quad JK flipflop, but they share a common clock so 
that doesn't work for this application.

I can do better in cost and space with discretes.

ideas???