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The LTC6990HS6 can operate up to 170 MHz, but the maximum frequency range depends on the specific application and the quality of the external components used.
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To ensure stability and oscillation at the desired frequency, follow the recommended component values and layout guidelines in the datasheet, and use a high-quality crystal or ceramic resonator with a suitable load capacitance.
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Use a 10uF ceramic capacitor in parallel with a 100nF ceramic capacitor, placed as close as possible to the VCC pin, to ensure proper power supply decoupling and noise reduction.
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Yes, the LTC6990HS6 can be used as a clock source for multiple devices, but ensure that the output current capability is sufficient to drive all the loads, and consider using a buffer or repeater if necessary.
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Check the power supply voltage, decoupling, and layout; verify the crystal or ceramic resonator is properly connected and of suitable quality; and ensure the output is properly terminated and loaded.
