SN75LBC773

SN75LBC773 GEOPORT™ TRANSCEIVER D Supports a 9-Pin GeoPort™ Host Interface Standard for the Intelligent Network Port D Designed to Operate up to 4-Mbit/s Full Duplex D ± 5 V Supply Operation D Has Driver Short-Circuit Protection D Includes Failsafe Mechanism for Open Inputs D Is Backward Compatible with AppleTalk™ and LocalTalk™ D Combines Multiple Components into a Single Chip Solution D Complements the SN75LBC772 9-Pin GeoPort Peripheral (DCE) Interface Device D Uses LinBiCMOS™ Process Technology SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 DW PACKAGE (TOP VIEW) DA1 VEE NC NC REN DZ2 DY2 GND DEN DA2 1 2 3 4 5 6 7 8 9 10 20 GND 19 VCC 18 DY1 17 RY3 16 RB3 15 RA2 14 RY2 13 RB1 12 RA1 11 RY1 logic diagram (positive logic) description The SN75LBC773 is a low-power LinBiCMOS device that incorporates the drivers and receivers for a 9-pin GeoPort host interface. GeoPort combines hybrid EIA/TIA-422-B and EIA/ TIA-423-B drivers and receivers to transmit data up to four-Mbit/s full duplex. GeoPort is a serial communications standard that is intended to replace the RS-232, AppleTalk, and printer ports all in one connector in addition to providing real-time data transfer capability. The SN75LBC773 provides point-to-point connections between GeoPort-compatible devices with data transmission rates up to 4-Mbit/s full duplex featuring a hot-plug capability. Applications include connection to telephone, ISDN, digital sound and imaging, fax-data modems, and other traditional serial and ...