Other Parts Discussed in Thread: SN74LV4046A
Hi team
I want to use the PLL-IC at 6.78MHz.
I purchased the CD74HC4046A, which can operate at 18MHz (when Vcc = 5V ) according to the "features" on the top page of the data sheet.
So far, I have confirmed that the VCO can transmit 6.78MHz.
However, I have not yet confirmed the correct operation of the phase comparator (PC2) at 6.78MHz.
I haven't found the causes of the problem yet.
How much the frequency, which can operate correctly the PC2 without a divider?
Moreover, if PC2 could work at 6.78MHz, what is the reason of the problem?
Best Regards.
Thank you for your support!
From Yasuo.