18 LIN Transceiver Module

The fully integrated LIN Transceiver is designed in compliance with the LIN Specification 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2. It interfaces the LIN protocol handler and the physical layer. The device is designed to handle the low-speed data communication in vehicles, for example, in convenience electronics. Improved slope control at the LIN bus ensures data communication up to 20 kbaud. Sleep mode ensures minimal current consumption even in the case of a floating bus line or a short circuit on the LIN bus to LIN_VSS.

The primary features of the LIN Transceiver module are:

  • Supply Voltage Up to 40V
  • Operating Voltage VS = 5V to 28V
  • Very Low Supply Current
    • Sleep mode: Typically 9 μA
    • Fail-Safe mode: Typically 80 μA
    • Normal mode: Typically 250 μA
  • Fully Compatible with 3.3V and 5V Devices
  • LIN Physical Layer According to LIN 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2
  • Wake-up Capability via LIN bus (100 μs dominant)
  • External Wake-up via LIN_WKIN pin (100 μs low level)
  • LIN_INH Output to Control an External Voltage Regulator or to Switch the Commander Pull-up
  • Wake-up Source Recognition
  • LIN_TXD Time-out Timer
  • Bus Pin is Overtemperature and Short-Circuit Protected vs. LIN_VSS and Battery
  • Advanced EMC and ESD Performance
  • Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.3”
  • Interference and Damage Protection According to ISO7637

    Qualified According to AEC-Q100

Figure 18-1. LIN Transceiver Module Block Diagram
Note:
  1. Pin is connected to a device interconnect; see Table 1-1 for more information.