DS21Q59 vs. DS21Q50 Quad E1 Transceivers

Abstract: Application note 395 is provided for users of the DS21Q50 quad E1 transceiver whose application requires transmit and receive signaling. The DS21Q59 is pin-to-pin compatible and contains all the features of the DS21Q50 while adding signaling support. The DS21Q59 can be used in an existing DS21Q50 application without hardware or software modification.