Reply to "Design of a $10-20 DCS-TIU Port Tester Tool?"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Stan, if you have a "second LED" idea that's functional, I'd be glad to add it to the existing design. The good thing is that I haven't ordered any of the boards yet.

stan2004 posted:
Well now we're entering the eyes-glazing-over zone, but the 330 resistor is no problem in this application. The 4 mA output current characteristic for the 74HC and 74HCT family is simply a point on a curve,

I guess I should have actually downloaded the data sheet, I just saw that on the Digikey site and it caught my eye.

7/20/183:39 PM

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