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madbeanpedals::forum

Projects => General Questions => Topic started by: danfrank on November 22, 2020, 04:29:15 PM

Title: Which 4049 is Best for Driving BBDs, BE or UBE?
Post by: danfrank on November 22, 2020, 04:29:15 PM
And there's even a 74HC4049!
I've always used the 4049UBE version but have read elsewhere that the buffered (BE) version actually makes better quality clock pulses than the unbuffered (UBE) version. Does anyone here have a definitive answer to this?
To BE or not UBE?
That is the question...
Title: Re: Which 4049 is Best for Driving BBDs, BE or UBE?
Post by: gordo on November 22, 2020, 07:52:32 PM
I don't know the answer but I did like the question.  Whether 'tis nobler in the mind to suffer. The slings and arrows of outrageous BBD prices...
Title: Re: Which 4049 is Best for Driving BBDs, BE or UBE?
Post by: danfrank on November 22, 2020, 09:25:08 PM
Lol!
Ok, I gotta get serious now:
Calling all Scruffie, calling all Scruffie...
Title: Re: Which 4049 is Best for Driving BBDs, BE or UBE?
Post by: alanp on November 23, 2020, 04:25:32 AM
I'd have to check, but my guess would be that BE makes better clock pulses.

However, you can't use any spare BE for something like a ROG 22/7, or any overdrive that abuses a 4049UBE as a faux opamp.
Title: Re: Which 4049 is Best for Driving BBDs, BE or UBE?
Post by: danfrank on November 23, 2020, 04:55:50 AM
Correct. Only the UBE is good for analog through it.
But for BBD clock drivers it seems more like a digital application. I'm going to get some and try them out.
BBDs are weird... They're considered analog but they kind of work like digital. Go figure...
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