The HMC677LP5(E) is a multi-function BiCMOS control interface IC which is ideal for driving the gates of FET and pHEMT based MMIC control devices. This unique IC can be used to simplify the control of microwave and millimeterwave transmit/ receive modules, military subsystems, and multithrow/ multiport test and measurement equipment. The HMC677LP5(E) accepts serial or parallel data, and can drive up to 6 complementary sets of outputs. The HMC677LP5(E) also provides additional functionality such as a power-up state selection, adjustable output voltage levels, and a latched parallel control mode which allows multiple control devices to share a common data bus. The HMC677LP5(E) is ideal for controlling digital phase shifters, digital attenuators, digital variable gain amplifiers, and switching matrices embedded in complex microwave and millimeterwave assemblies.