Counter Circuit???

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cool4uall

New Member

• Mar 6, 2006

• #1

Hey Guyz, I need to make a system that counts object as they are passed on passing belt. I have a IR Source and IR detector and then I need a counter which counts and connect to it. Can someone help me with this one?. Its urgent and a school preject.Thanks.

 

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Russlk

New Member

• Mar 6, 2006

• #2

I don't know if the MC14553B is still in production, but it is exactly what you need. My data book even has the complete schematic for the display.

 

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cool4uall

New Member

• Mar 6, 2006

• #3

Where is ur databook? Can I get it? Thanks a lot!

 

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Russlk

New Member

• Mar 6, 2006

• #4

Do a Google search for "MC14553B datasheet".

 

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cool4uall

New Member

• Mar 6, 2006

• #5

MC14553B is not available anywhere. Is there any equivalent counter for that? I tried on Google, I don't get anything. Can you help me out? Thanks.

btw What about 4-digit counter instead of 3-digit?

 

jbeng

Member

• Mar 6, 2006

• #6

You could use the 74c926 counter from Fairchild. It's a 4-digit multiplexed counter chip which uses common-cathode led displays. You can cascade the '926 if you need more than 4 digits. It's still in production and available from Digikey, Jameco, Mouser, etc.
Here's a data sheet link: https://www.fairchildsemi.com/ds/MM/MM74C926.pdf
The cheapest I found was Digikey at about $11US ea.
JB

 

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Russlk

New Member

• Mar 6, 2006

• #7

I found the MC14553B at Allied - $2.64, Digikey - $1.90, Newark - $1.89. The Newark description is confusing, I don't know if it is thru-hole or surface mount.