BCD up and down counter

  • #1

Main Question or Discussion Point

hi,

I wish to design BCD up and down counter circuit for my mini project. I planned to use IC 74LS192. Unfortunately i cant able to get this IC. There is any BCD counter ICs are available with separate up and down counting clock signals. Because i got some ICs for up and down counting which uses only one clock pulse. but i need an IC with two separate clock signals for up and down counting.

Thanks in advance.
 

Answers and Replies

  • #2
vk6kro
Science Advisor
4,081
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The 74LS192 is still current and readily available.
http://cgi.ebay.com.au/5x-74LS192-S...651?pt=LH_DefaultDomain_0&hash=item19be3e88a3
Depends on where you are though.

There are variations on the 192 such as the 74C192, 40192, 74HC192.

If your suppliers have limited stocks, maybe you could find out which counters they have and research those ones.

Another chip that does up-down counting is the 40110.
This does not do BCD counting. It has direct drive for a 7 segment display, so it is easier to use if you want this type of display.
Here is a description of this IC:
http://focus.ti.com/docs/prod/folders/print/cd40110b.html
and here is a datasheet for it.:
http://focus.ti.com/lit/ds/schs100/schs100.pdf
 
  • #3
hi vk6kro,

Thanks for your quick reply vk6kro. I will collect the details about the ICs which you have mentioned...:)
 
  • #4
247
1
vrajasekaran,

I don't know what type of project you are doing, but if Up/Down counting is merely a function of the larger project, you may want to consider a uController. A $3 uController and a bit of code can do amazing things. Popular choices include the AVR family and the PIC family.

Fish
 

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