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Divide by 200 single IC

J

Jim Conrad

Jan 1, 1970
0
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad
 
M

martin griffith

Jan 1, 1970
0
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad
What's the max frequency?


martin
 
K

koma

Jan 1, 1970
0
Jim Conrad skrev:
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad

If it is a clock like signal I would use a 74HC390.
From the datasheet:

One package can be configured to divide-by-2, 4, 5, 10, 20, 25, 50 or
100.
 
W

Winfield Hill

Jan 1, 1970
0
I am trying to reduce my parts count. Does anyone know of a
way to divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad

I like to use the 74hc40103 chips, which are programmable
to count down or divide from 1 to 255. They operate to
29MHz typical, 15MHz, min according to Philips, oops, NXP.
DigiKey has them in stock.
 
H

Hawker

Jan 1, 1970
0
Divide what? A Clock? A Serial Stream? A Parallel Signal? An Analog signal?
Anyway for all the above, except the analog signal, my answer would be
use a small CPLD.

-H
 
I like to use the 74hc40103 chips, which are programmable
to count down or divide from 1 to 255. They operate to
29MHz typical, 15MHz, min according to Philips, oops, NXP.
DigiKey has them in stock.

Me too. Cheaper than a programmable logic device, and easier to
program. Digikey isn't the only distributor who stocks the device -
Farnell also list the 74HC40103N.
 
T

TT_Man

Jan 1, 1970
0
Jim Conrad said:
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad

AT Tiny 15 and a few lines of code....
 
R

RST Engineering \(jw\)

Jan 1, 1970
0
Do I get diodes? Resistors? Capacitors? How fast a clock?

Jim
 
R

Rich Grise

Jan 1, 1970
0
AT Tiny 15 and a few lines of code....

+ development system, + learning curve, +...

I don't see what's wrong with a 4020/4040/4060 and a little bit o'
logic...

Cheers!
Rich
 
C

chuck

Jan 1, 1970
0
Jim said:
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad

Take a look at the 4518. That plus a FF will give you 200.

Chuck
 
M

MooseFET

Jan 1, 1970
0
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad


CD4059
 
F

Fred Bartoli

Jan 1, 1970
0
Rich Grise a écrit :
+ development system, + learning curve, +...

I don't see what's wrong with a 4020/4040/4060 and a little bit o'
logic...

OK. And next time do 199, then 198, then 197.
 
D

Don Lancaster

Jan 1, 1970
0
Rich said:
+ development system, + learning curve, +...

I don't see what's wrong with a 4020/4040/4060 and a little bit o'
logic...

Cheers!
Rich

Has exactly the same problems as using 6SN7's.


--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: [email protected]

Please visit my GURU's LAIR web site at http://www.tinaja.com
 
S

samiam

Jan 1, 1970
0
Jim said:
I am trying to reduce my parts count. Does anyone know of a way to
divide down by 200, or even 20, using a single CMOS IC?

Jim Conrad

Id use a 74x393. the dual ripple counters will allow up to a divide by 256
 
S

samiam

Jan 1, 1970
0
samiam said:
Id use a 74x393. the dual ripple counters will allow up to a divide by 256

Scratch that, youd still need logic to decode the outputs and reset at
200 to achieve divide by 200
 
C

chuck

Jan 1, 1970
0
samiam said:
Scratch that, youd still need logic to decode the outputs and reset at
200 to achieve divide by 200

OK, what about the MC14553? 3-digit BCD counter in a 16-pin DIP. Should
be exactly what you are looking for. It even has an on-chip oscillator.

Chuck
 
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