Seeking other frequency divider / binary counter chips

JingleJoe

I'm aware of the 4040, 4020, 4060 and even 4024 which all count in binary or divide the input clock frequency by half each step.
However I am looking for a frequency divider IC with multiple clock inputs and only a few divisions for each one, 3 is plenty. I'm thinking, if there's one clock input and 3 outputs you could fit 3 separate counters/dividers in a standard 14 pin IC. Does anyone know if such an IC exists? Or anything similar?
I don't want to go wasting a whole 4040 you see, for just three or four outputs. I've got cost and board space in mind too.

richardc64 · Last edited by richardc64 on Wed May 09, 2012 5:19 am; edited 1 time in total

The CD4520 is very nice. It contains two synchronous 4-bit binary counters, each with clk, enable and reset. Clock and enable are somewhat interchangeable, effectively being two clk inputs of opposite polarities.

The similar 4518 is decimal. ~~Its first stage~~ The first stage of each counter is a divide-by-2.

JingleJoe · Posted: Wed May 09, 2012 5:11 am Post subject:

The CD4520 looks perfect! Very Happy

But my usual supplier doesn't have any Sad

I may have to resort to Rapid and their extortionate postage charges.

Those old organ chips look very interesting, I'd love to play with some but they are just too expensive/rare Laughing

EDIT: neither my usual supplier, spiratronics, or Rapid have the 4520 Sad

Anyone got any they would like to sell me?

PHOBoS · Posted: Wed May 09, 2012 8:43 am Post subject:

You could also use some flipflops (which is what's usually inside those divider chips) but it'll probably not really reduce the chip count.

mrmrshoes · Posted: Wed May 09, 2012 11:06 am Post subject:

alright Joe

My local shop holds 4520B

They are located near newcatle upon tyne. Not to far from liverpool.
I'm not sure about shipping costs coz i go there in person.

http://www.esr.co.uk/components/products/frame-ics.htm

JingleJoe · Posted: Wed May 09, 2012 2:38 pm Post subject:

I thought about using flip flops phobos, but like you said, increases the chipcount Rolling Eyes

Thankyou mrmrmshoes Smile

I may buy from them if I can't get any at my local electronics shop.

JingleJoe · Posted: Thu May 10, 2012 6:19 am Post subject:

Spiffing! My electronics shop had them in stock Wink

They look about 30 years old though Very Happy

I love that place.

Psyingo · Joined: Jun 11, 2009 Posts: 248 Location: Canada

JingleJoe · Posted: Sat May 12, 2012 10:59 am Post subject:

bubzy · Posted: Sun May 13, 2012 1:08 am Post subject:

JingleJoe · Posted: Sun May 13, 2012 2:58 pm Post subject: