AU5783

INTEGRATED CIRCUITS AU5783 J1850/VPW transceiver with supply control function Objective specification 1999 May 11 Philips Semiconductors Philips Semiconductors Objective specification J1850/VPW transceiver with supply control function AU5783 FEATURES multiplexing Supports SAE/J1850 VPW standard for in-vehicle class B Bus speed 10.4 kbit/s nominal Drive capability 32 bus nodes Low RFI due to output waveshape function Direct battery operation with protection against +40V load dump and 8 kV ESD DESCRIPTION The AU5783 is a line transceiver being primarily intended for in-vehicle multiplex applications. It provides interfacing between a J1850 link controller and the physical bus wire. The device supports the SAE/J1850 VPWM standard with a nominal bus speed of 10.4 kbit/s. For data upload and download purposes the 4X transmission mode is supported with a nominal bus speed of 41.6 kbit/s. The AU5783 provides protection against loss of ground conditions, thus ensuring the network will be operational in case of an electronic control unit loosing connection to ground potential. Low power operation is supported through provision of a sleep mode with very low power consumption. In addition an external voltage regulator can be turned off via the AU5783 transceiver to further reduce the overall power consumption. The voltage regulator will be activated again upon detection of bus activity or upon a local wake-up event. Bus terminals proof against automotive transients...