Help question about Multiplexer

Thread Starter

engineerfreak

Joined Jan 1, 2013
1
Anyone know how to make use of a 74LS151 to make it count up and count down?
Not quite sure about how to make it run cause i dont quite understand what is in the MUX! D: Help please!
Thanks
 

absf

Joined Dec 29, 2010
1,968
Not sure if that's the standard way of doing it.

I used 3x 74151 and a 74163 binary counter to design the MUX up/down counter. The "Y" outputs are counting up while the "/Y" outputs are counting down.

Are there more elegant ways?

Allen
 

ScottWang

Joined Aug 23, 2012
7,402
If you want to using 5V to be the power source, then you can choose 74HC151 and 74HC163.
I would rather to use CD4051 and CD4029, they just need a small current, and the voltage range is bigger as 3~15V.
 
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