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DIY Stompboxes => Building your own stompbox => Topic started by: zener on June 21, 2004, 10:35:47 PM

Title: CD4049 variants
Post by: zener on June 21, 2004, 10:35:47 PM
I want to build ROG's Double D. It specifies a CD4049UBE but what I have is a CD4049UBCP. Would that make a difference?

Thanks for any help.
Title: CD4049 variants
Post by: RDV on June 21, 2004, 10:41:38 PM
Socket it and if it doesn't work I'll send you one. Ti has them for free as samples you know.

RDV
Title: CD4049 variants
Post by: zener on June 21, 2004, 10:53:01 PM
Quote from: RDVSocket it and if it doesn't work I'll send you one.

Really?  :D  Well, thanks a lot for the offer, I won't decline it if ever. Of course, I always socket ICs and trannies. I hope my chip will works that you don't have to bother sending me one :) .
Title: CD4049 variants
Post by: Mark Hammer on June 22, 2004, 09:14:07 AM
The "UB" puts you on the right track.  There will apparently be variation across chips and subcategories, primarily in noise and some sonic qualities, but the critical distinction between buffered ( :cry: ) and unbuffered ( :D ) seems to be under control.
Title: CD4049 variants
Post by: Peter Snowberg on June 22, 2004, 09:22:24 AM
It sould be 100% fine. The UB means unbuffered and the letters after that depend on who made the chip. E=TI code for plastic DIP, CP=Fairchild code for plastic DIP with commercial temperature range.

Take care,
-Peter
Title: CD4049 variants
Post by: Bernt on June 22, 2004, 09:29:01 AM
Maybe it's just me, but I think it's funny: 4049 is listed as a "hex inverter buffer", so the 'UB' suffix means an unbuffered buffer...
BTW, you can experiment with any unbuffered inverting-gate chip (NOR, NAND); just tie the inputs (of a gate) together.
Kindest regards, Bernt.
Title: CD4049 variants
Post by: zener on June 22, 2004, 09:35:18 AM
So, what matters is the "U". Actually, what I have is a Motorola MC14049UBCP which has the same name with that of Onsemi.
http://www.onsemi.com/pub/Collateral/MC14049UB-D.PDF

Thanks :D
Title: CD4049 variants
Post by: Mark Hammer on June 22, 2004, 11:42:01 AM
The buffering in question is with respect to whether it is intended to be followed by a TTL device or not.
Title: CD4049 variants
Post by: Fret Wire on June 22, 2004, 11:48:29 AM
I just happen to have 10 CD4049UBE samples coming from TI. :D  :D
Title: CD4049 variants
Post by: Kleber AG on June 22, 2004, 12:03:15 PM
Got a question 8)
Is it possible to ask TI to send samples for the second time? I already got it one time with some ICs, but now I'd like to ask for some different ones...

Regards
Kleber AG
Title: CD4049 variants
Post by: Fret Wire on June 22, 2004, 12:41:30 PM
This is my second sample order, last was in Feb. I ordered some different ones, but I keep hitting them for Burr Brown's each time. 8)
Title: CD4049 variants
Post by: Kleber AG on June 22, 2004, 01:02:48 PM
8)
I know nothing about these called "Burr Brown's"  :?  
What difference, and wich ones should I ask then for?
Does they have some ICs for power amplifier? For a high wattage?(around 100W?)

Thanks for the info!
Kleber AG
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