FEATURES
* Built-in bias resistors enable the configuration of an inverter
   circuit without connecting external input
   resistors (see the equivalent circuit).
* The bias resistors consist of thin-film resistors with
   complete isolation to allow positive biasing of the input
   They also have the advantage of almost completely
   eliminating parasitic effects.
* Only the on / off conditions need to be set for operation,
   making device design easy.