I would like to run the the HMC574AMS8E at Vdd=8V for the higher P0.1dB. The HMC574AMS8E datasheet shows a schematic (pg. 6) where the Vdd of the HMC574A and the 74HC04 logic share the same +Vdd. Note 2 (also pg. 6) says:
"Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd of +3 to +8 Volts applied to the CMOS logic gates and to pin 4 of the RF switch."
I'm having a lot of trouble finding any inverters with an absolute maximum for Vdd of more than 6 or 7 volts. Two questions:
Q1) Can ADI suggest any?
Q2) Could I run the HMC574A at 8V and the inverters off say only +6V?
HMC574A's control inputs must be biased to 0/8V when Vdd=8V. For 8V operation, you may consider using the driver circuit below between switch control inputs and TTL/CMOS logic controller.
The switch driver circuit is described in the article below.