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Where to buy 74HC9046?

T

Tim Shoppa

Jan 1, 1970
0
I've heard much talk over the past decade in s.e.d of the Philips-made
74HC9046 improvement on the 74HC4046 PLL, but my favorite web search
tools come up quite empty when trying to find the datasheet or a
distributor. The www.semiconductors.philips.com website is
phenomenally unusable, but if someone can ferret out the URL for a PDF
of the datasheet I'd appreciate it.

Tim.
 
G

Genome

Jan 1, 1970
0
Tim Shoppa said:
I've heard much talk over the past decade in s.e.d of the Philips-made
74HC9046 improvement on the 74HC4046 PLL, but my favorite web search
tools come up quite empty when trying to find the datasheet or a
distributor. The www.semiconductors.philips.com website is
phenomenally unusable, but if someone can ferret out the URL for a PDF
of the datasheet I'd appreciate it.

Tim.

I think you might be stuffed. I tried the easy one of typing 74HC9046 into
the search facility and got the two hits you got. Perhaps it's a typo.

Pass me your space suit and I'll fart into it. :)

DNA
 
F

Fred Bartoli

Jan 1, 1970
0
Tim Shoppa said:
I've heard much talk over the past decade in s.e.d of the Philips-made
74HC9046 improvement on the 74HC4046 PLL, but my favorite web search
tools come up quite empty when trying to find the datasheet or a
distributor. The www.semiconductors.philips.com website is
phenomenally unusable, but if someone can ferret out the URL for a PDF
of the datasheet I'd appreciate it.

Yep, I've done the same search some time ago, but finally found that the
circuit is an HCT device and doesn't come into the HC flavor.

I recall having hard time to find a distro at a decent price. Do you have
found one?
 
S

Spehro Pefhany

Jan 1, 1970
0
T

Tim Shoppa

Jan 1, 1970
0
Yep, I've done the same search some time ago,
but finally found that the circuit is an HCT device
and doesn't come into the HC flavor.

Well, we all know that it's really an analog part :).

74HCT9046 works much better for the search, thanks! Arrow and Avnet
have stock in SOIC, I'd rather have DIP for my playing around but I'll
try whatever I can get my hands on.

Tim.
 
J

Joerg

Jan 1, 1970
0
Hello Tim,
74HCT9046 works much better for the search, thanks! Arrow and Avnet
have stock in SOIC, I'd rather have DIP for my playing around but I'll
try whatever I can get my hands on.

My old rule: If Digikey doesn't have it (it seems they don't) then it's
most likely a "boutique chip". Meaning it might become unobtainable out
of the blue. Then I'd do my darndest to use a lesser but more ubiquitous
performer and make it perform via a compensation loop or whatever. At
least if it was a design for mass production.

Regards, Joerg
 
W

Watson A.Name - \Watt Sun, the Dark Remover\

Jan 1, 1970
0
Joerg said:
Hello Tim,


My old rule: If Digikey doesn't have it (it seems they don't) then it's
most likely a "boutique chip". Meaning it might become unobtainable out
of the blue. Then I'd do my darndest to use a lesser but more ubiquitous
performer and make it perform via a compensation loop or whatever. At
least if it was a design for mass production.

Regards, Joerg

I tried to find darndest in my dictionary but no luck. I think it's
darnedest.

Nowadays I've read where frequency agile devices such as cellphones use
PLL circuits that operate in the GHz, but I don't know if these are
custom circuits just for cellphones or what. In any case, prescalers
seem to work.
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that "Watson A.Name - \"Watt Sun, the
I tried to find darndest in my dictionary but no luck. I think it's
darnedest.

It's slang, and I think the 'darndest' spelling is customary.
'Darnedest' is either a lexicographer's wet dream or the superlative of
the adjective 'darned', as in 'old sock'.
 
R

Rich Grise

Jan 1, 1970
0
I read in sci.electronics.design that "Watson A.Name - \"Watt Sun, the


It's slang, and I think the 'darndest' spelling is customary.
'Darnedest' is either a lexicographer's wet dream or the superlative of
the adjective 'darned', as in 'old sock'.

Google won't 'define:' either one, nor will Kdict - but just a POOGS gets
34,600 hits on "darnedest" and 152,000 on "darndest". Art Linkletter
spelled it without the 'e' in "Kids say the darndest things", as did Cosby
when he copied him.

Cheers!
Rich
 
J

Joerg

Jan 1, 1970
0
Hello Watson,
I tried to find darndest in my dictionary but no luck. I think it's
darnedest.

Mountain speak, closely related to "dang!", something I try to avoid.
That was particularly difficult when I laid tile and hit my head on a
lava rock wall.
Nowadays I've read where frequency agile devices such as cellphones use
PLL circuits that operate in the GHz, but I don't know if these are
custom circuits just for cellphones or what. In any case, prescalers
seem to work.

It's mostly custom but you can get devices for WLAN use. They are often
overkill and too expensive for an application that is content with the
frequency range of a 4046. Sometimes I made PLLs using regular CMOS
inverters. That squishes out a few more cents versus a 4046 design and
the remaining gates can be rented out. A lot more MHz, too.

Regards, Joerg
 
D

Dav Lag

Jan 1, 1970
0
Joerg said:
Hello Watson,



Mountain speak, closely related to "dang!", something I try to avoid.
That was particularly difficult when I laid tile and hit my head on a
lava rock wall.



It's mostly custom but you can get devices for WLAN use. They are often
overkill and too expensive for an application that is content with the
frequency range of a 4046. Sometimes I made PLLs using regular CMOS
inverters. That squishes out a few more cents versus a 4046 design and
the remaining gates can be rented out. A lot more MHz, too.

Regards, Joerg

inverters? wow, none of my googling would reveal that design
Dave
 
J

Joerg

Jan 1, 1970
0
Hello Dave,
inverters? wow, none of my googling would reveal that design
Dave

Some of the really rock-bottom cost solutions are done either in house
or by consultants like me. Most likely these designs won't ever show up
on the web because of confidentiality.

However, you may find clever solutions on ham radio sites. Don't know
about PLLs but a good start might be the site of the late Jan-Martin, a
fellow participant in this newsgroup who died much too young:

http://www.agder.net/la8ak/index1.htm

Sites like this a full of ideas.

Sometimes even folks who turn every penny during a design can be
floored: A long time ago I bought an audio RF clipper. Naturally I had
to look inside and it consisted mostly of ordinary 4000 series CMOS
logic used in analog functions. Yet this thing works so great that it
even impressed a friend who tried it on his E-guitar. He said that their
$1000 plus stuff doesn't sound this good.

Regards, Joerg
 
P

Pooh Bear

Jan 1, 1970
0
Tim said:
The www.semiconductors.philips.com website is phenomenally unusable,

I'm astonished at that comment. I find it a model of clarity. Never ever
had the slightest trouble finding what I wanted there.

I can't find any reference to a 74hc9046. Where did you get the part
number ?

Graham
 
P

Pooh Bear

Jan 1, 1970
0
R

Rich Grise

Jan 1, 1970
0
I'm astonished at that comment. I find it a model of clarity. Never ever
had the slightest trouble finding what I wanted there.

I didn't find it totally unusable, but it is bloated with images, and
those javascript menus are supremely annoying.

Cheers!
Rich
 
F

Fred Abse

Jan 1, 1970
0
I didn't find it totally unusable, but it is bloated with images, and
those javascript menus are supremely annoying.

Throws up errors by the shedload, too. Are there *any* Javascript pages
out there that work properly with non- M$ browsers?
 
T

Tim Shoppa

Jan 1, 1970
0
I find it a model of clarity.
[...]
I can't find any reference to a 74hc9046.

My frustration was largely because a search on the Philips website
turned up two hits on 74HC9046 but neither of them were useful for
anything. In fact, the part number is 74HCT9046, and that search
yields useful results.

As others have noted, the website is a bit graphics-heavy and
Javascript-buggy, but I worked around those difficulties without a lot
of pain. I prefer, say, the TI or NatSemi websites for a lot of
things, but even those have their quirks.

Tim.
 
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