Should I use TTL or CMOS devices to build a counter circuit?

 

Should I use TTL or CMOS devices to build a counter circuit?

Yes.

 

Yes.

Nice answer.

 

True answer! You can use either.
TTL will need a bigger power supply. 74HC will get the same frequency range as TTL. 4000 series CMOS will do if you don't need much more than a few hundred kHz, but there are some neat CMOS devices such 4026, 4033 and 40110 that can count and drive a display and don't exist in the TTL/HCMOS range.

 

thx

True answer! You can use either.
TTL will need a bigger power supply. 74HC will get the same frequency range as TTL. 4000 series CMOS will do if you don't need much more than a few hundred kHz, but there are some neat CMOS devices such 4026, 4033 and 40110 that can count and drive a display and don't exist in the TTL/HCMOS range.

IanO

 

Have y

thx

IanO

Have you seen any good circuits pass through this site that might be a good starting point?

 

Have y

Have you seen any good circuits pass through this site that might be a good starting point?

What did you want to count?

 

What did you want to count?

Probably audio frequencies as well as timebase frequency for various digital projects.
I would use it as a piece of test equipment really.

I felt that this project would be a good learning experience as it would hopefully involve different
types of digital circuits to expand my practical knowledge.

 

40110 would probably be the device to use.
Here's a datasheet. It's a bit disappointing because datasheets of that era had lots of useful circuit examples, and this one doesn't.
Every second, you need a negative pulse on LATCH to transfer the data to the display, and then a positive going pulse on RESET to make the counter start again from 0, so what you see on the display is the number it counted in a second.
You will probably get some results with "CD40110 frequency counter" in a search engine.

 

Thanks

40110 would probably be the device to use.
Here's a datasheet. It's a bit disappointing because datasheets of that era had lots of useful circuit examples, and this one doesn't.
Every second, you need a negative pulse on LATCH to transfer the data to the display, and then a positive going pulse on RESET to make the counter start again from 0, so what you see on the display is the number it counted in a second.
You will probably get some results with "CD40110 frequency counter" in a search engine.

Thanks Ian. I will do some research now.