On Fri, Jun 25, 2004 at 05:36:22PM +0200, Levente KOVACS wrote: > > 1) Implicit connections are good when they help minimize the crowding > > of a schematic. > > ... > > > 3) Implict connections are bad for high speed analog where you want to > > > > filter the devices power from the boards power. > > > I think even a normal TTL gate generates noise on the top of the power > supply lines. It's better to filter it. So, anyway, it's better to have > thoes pins visible. > > I've seen IC sockets coming with a 100nF capacitor soldierd to the > traditional corner pins. > > Not to mention high frequency analog devices. You should not just filter > the noise from the supply to the chip, however you should filter the > generated noise coming from the chip, to the power line. > > I often use circuit like this...
What values of left C, right C and coil do you typically use for HC logic family? I am using 100nF coupled with 1nF in Ronja Twister and Ronja AUI Forte without the coil in the middle. Cl<
