RTL Logic

From: Dwight K. Elvey <dwight.elvey_at_amd.com>
Date: Mon Jan 10 14:56:31 2005

 4000 series is good to around 15 volts someplace as I recall.
I don't remember how low it goes but it seems like 2.5v someplace.
It does run slower at lower voltages and even at 5 volts, it
is really slow for logic. It really depends on the application.

>From: "Scott Stevens" <chenmel_at_earthlink.net>
>Doesn't 4000-series CMOS logic operate pretty well at non-5 volt levels
>if powered to such levels? I haven't used any in years, but all the
>'building block' logic components are available, i.e. the 4049 and such.
> A company I worked for made a muscle stim device out of a single 4000
>series 'hex converter' using feedback to make multivibrators, crude
>comparators, drivers, etc. out of the gates. It wasn't powered at 5
>volts, the whole thing ran from a 9 volt battery. The logic thresholds
>for 4000 CMOS are 1/3 and 2/3 of VCC, for whatever VCC you supply, if I
Received on Mon Jan 10 2005 - 14:56:31 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:43 BST