From: Garey Barrell 
Subject: Re: [drakelist] DR-7 Display


Garey Barrell  made an utterence to the drakelist gang
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Oops, make that four RS Flip-flops...

Dick -

I hope I'm wrong, but it looks like the HEF4xxx series is the equivalent
to the MC4xxx series CMOS, not the ECL line.

I can't find any data on a HEF 40138, but if you can, see if it is a
"Bi-quinary Counter" or three RS flip-flops.  I suspect it's
something else.

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
http://hr99.home.mindspring.com/R-4C_Servicez/>

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