Divide by 200 single IC

What's the max frequency?

martin

Jim Conrad skrev:

If it is a clock like signal I would use a 74HC390.

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

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.

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

On 3/19/2007 4:42 PM, The digits of Jim Conrad's hands composed the following:

You mean like a PIC?

-- Many thanks,

Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss:

Please visit my GURU's LAIR web site at

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.

-- Bill Sloman, Nijmegen

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

Don Lancaster wrote in news:568hnnF27d0ikU4 @mid.individual.net:

Wow! that took longer than I expected...

(I was expecting it come first or second)

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

Chuck

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CD4059

Ok, a 199:1 ratio resistor divider?

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

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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Not true. The ICs don't need filament transformers.

-- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85.

Michael A. Terrell Central Florida

you can divide by 20 or 100 with a 4518