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HMC574A

Thread Summary

The user wants to increase the 1 dB compression input power for the HMC574A RF Switch by connecting A and B to 5V with pull-up resistors while using a 3.3V microcontroller in open-drain mode. The final answer confirms that this configuration is undefined in the datasheet but poses no risk of damage to the switch.
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Category: Datasheet/Specs
Product Number: HMC574A
Hi,
I want to use the HMC574A RF Switch, controlled by a microcontroller with 3.3V output voltage. I want to increase the input power for 1 dB compression by connecting A and B to 5V power with pull-up resistors, so the logic voltage will be 5V when the GPIO is in open-drain mode.
There is no information in the datasheet when both A and B are in '1' logic.
Thank you in advance