Toshiba and Fairchild also make "microgate" parts as well. I used my first Toshiba parts about 5 years ago and have since started using the TI and Fairchild parts also. They're extremely handy in tight SMD layouts where you only need a gate or two. One thing to watch out for is many of the devices only have about half the output drive current capability as their HC or AHC counterparts -- probably die size or package power handling issues, I'm guessing. BTW, I recently had to add a bi-color SMD LED to a circuit that previously was a single LED and had very little room for any external components. I thought about it and scribbled several circuit ideas for a few days and came up with the *exact* same circuit shown below. I used a SO14 74HC14 though, I had six circuits to upgrade and that worked out to the least space required. Matt Pobursky Maximum Performance Systems On Fri, 23 Apr 2004 16:29:23 -0700, Shawn Wilton wrote: > Here you go: http://www-s.ti.com/cgi-bin/sc/family3.cgi?family=INVERTERS > > Byron A Jeff wrote: > > > On Thu, Apr 22, 2004 at 05:14:50PM +0100, Michael Rigby-Jones wrote: > > > >>Even easier is to drive one side of the LED and a CMOS inverter input with > >>the PIC pin, and the other side of the LED with the inverter output. The > >>above solution may be ok, but you are limiting your forward voltage to > >>2.5volts for a 5v supply rail which may be marginal for some LED's > >> > >> |\ > >>---+ +-----+ |0-------------+ > >> | | |/ | > >> | | | > >> |----+----+-|>|-+---/\/\/---+ > >> | | | > >> | +-|<|-+ > >>PIC| LED > >> | > >>---+ > >> > >> > >>Regards > >> > >>Mike > > > > > > The only problem I see is packaging. You can get opamps two in a 8 pin package > > no problem. Not sure about inverters. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.