Multiply input clock using gates

[b16a2]

how to multiply the clock

Hi All

I need to multiply a clock frequency to drive a 4040,

the singal I want to multiply is being produced from a picaxe IC and I have reached its limit for a simple square wave signal out. I need a 50% duty wave and PWM is not an option


I need to multiply my signal by 4 to about 20Khz max from about 3khz to 5 Khz.


I know I can use a PLL and I dont mind using one, however I cannot find a schematic to follow.


any idea's ?

cheers

 

[FvM]

input clock

You can use a 4046 PLL.The datsheet has operational example circuits.

 

[b16a2]

multiply clock input

Cool thanks


Ill look into it