Digital circuits and analog devices

W2HX w2hx at
Thu Dec 1 20:34:38 CST 2016

Not only are they made of analog devices, but at the speeds things have been running at for the last 20 (maybe 30) years, they often behave like analog devices. Things like transmission line theory, crosstalk, oscillation, etc are all important design considerations.

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at] On Behalf Of Noel Chiappa
Sent: Thursday, December 01, 2016 9:31 PM
To: cctalk at
Cc: jnc at
Subject: Digital circuits and analog devices

So I have this memory of a set of law promulgated by an engineer at DEC, one of which was something to the effect that 'all digital circuits are made out of analog devices'. However, my memory doesn't recall where I saw this, and my Google-fu is not strong enough to turn it up. Can anyone help?


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