Is the HMC546MS8G MMIC Falsafe Switch control line TTL or CMOS compatible?
No. HMC546 does not feature TTL or CMOS compatible control input (Vctl).
The Vctl biases the series and shunt FETs in HMC546. The HMC546 can support high state Vctl between 3Vdc to 8Vdc. Control voltage level will minimally affect small signal performances but determine power handling performances especially for Rx path. See below for the maximum RF input power ratings and IP3 specs for 3V and 5V operation provided in the datasheet.
Therefore we recommend you to choose a supply voltage level, at which the part could provide required power handling, and ensure tight control voltage variation (Vdd ± 0.2V) for minimal performance variation.
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