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CD74HC4046A: maximum output frequency range

Part Number: CD74HC4046A

Hi team,

We need to do 4x frequency circuit by CD74HC4046A, input range is 100Hz~500kHz, output is 400Hz to 2MHz,  this is big frequency range, is it available for  CD74HC4046A?

I know this may tough for CD74HC4046A, so would you help to comments how much frequency dynamic range(fmax/fmin) of CD74HC4046A can make? like 10 or 100 in general?

and how can we get big frequency dynamic range(fmax/fmin), I mean how to choose R1/R2/C to get big frequency dynamic range(fmax/fmin)?

Thanks very much.

Regards, Sunny