The MAX4936/MAX4937 feature eight individually programmable switches controlled through an SPI(TM) interface with a 12-bit shift register and transparent latch. These features simplify device operation when updating the states of the T/R switch; they ensure that all switches are off at power-on; and they reduce noise due to clock feedthrough.
The MAX4936/MAX4937 T/R are based on the conventional diode topology, but include adjustable current biasing through the serial interface.