The HMC550AE is a GaAs MMIC SPST Failsafe Switch for use in switching applications which require low insertion loss and very low current consumption. With 0.7dB typical loss, these devices can control signals from DC to 6GHz and are especially suited for IF and RF applications including RFID, ISM and battery powered tags and portables. RF1 and RF2 are reflective opens when "Off". The switch requires a minimal amount of DC current in the "On" state and offers compatibility with CMOS and some TTL logic families. The failsafe topology results in the switch being normally "On", i.e. low insertion loss from RF1 to RF2, when no DC bias is applied.