# Divide by 200 single IC

J

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?

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?

What's the max frequency?

martin

K

#### koma

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?

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?

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.

D

Jan 1, 1970
0
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

B

#### [email protected]

Jan 1, 1970
0
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
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?

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

M

#### me

Jan 1, 1970
0
You mean like a PIC?

Wow! that took longer than I expected...

(I was expecting it come first or second)

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?

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?

CD4059

K

#### krw

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

Ok, a 199:1 ratio resistor divider?

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

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

J

Jan 1, 1970
0
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?

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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