The AD7306JNZ is a powered Line Driver/Receiver provides an interface between TTL signal levels and dual standard EIA RS-232/RS-422 signal levels. The part contains two RS-232 drivers, one RS-422 driver, one RS-232 receiver and one receiver path which can be configured either as RS-232 or as RS-422. An internal charge pump voltage converter facilitates operation from a single 5V power supply. The internal charge pump generates ±10V levels allowing RS-232 output levels to be developed without the need for external bipolar power supplies. A highly efficient charge pump design allows operation using non polarized, miniature 0.1μF capacitors. This gives a considerable saving in printed circuit board space over conventional products which can use up to 10μF capacitors. The charge pump output voltages may also be used to power external circuitry which requires dual supplies. This is often an essential requirement to meet tight system timing specifications.
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