The SN65HVDA100QDRQ1 is a Local Interconnect Network (LIN) Physical Interface integrates the serial transceiver with wakeup and protection features. The LIN bus is a single-wire bidirectional bus typically used for low-speed in-vehicle networks using data rates from 2.4 to 20kbps. The LIN protocol output data stream on TXD is converted by the SN65HVDA100 into the LIN bus signal through a current-limited wave-shaping driver as outlined by the LIN physical layer specification. The receiver converts the data stream from the LIN bus and outputs the data stream through RXD. The LIN bus has two states: dominant state (voltage near ground) and recessive state (voltage near battery). In the recessive state, the LIN bus is pulled high by the internal pullup resistor (30kR) and series diode, so no external pullup components are required for slave applications. Master applications require an external pullup resistor (1kR) plus a series diode per the LIN specification.
Local interconnect network (LIN) physical layer
Specification revision 2.1 compliant and conforms to SAEJ2602 recommended practice for LIN
LIN Transmit speed up to 20kbps LIN specified
Maximum, high-speed receive capable
Ultra-low current consumption
Allows wake-up events
High electromagnetic compatibility (EMC)
Control of external voltage regulator (INH pin)
Supports ISO9141 (K-Line) -like functions
Prevention of false wakeups with bus stuck
Dominant fault
Thermal shutdown
Unpowered node or ground disconnection failsafe at system level, node does not disturb bus
(EN)
