The TLIN1028S-Q1 LIN transceiver is a Local Interconnect Network (LIN) physical layer transceiver, compliant to LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A and ISO/DIS 17987–4 with integrated wake-up and protection features. The LIN bus is a single-wire, bidirectional bus that typically is used in low-speed in-vehicle networks with data rates that range up to 20 kbps. The LIN receiver works up to 100 kbps supporting in-line programming. The device converts the LIN protocol data stream on the TXD input into a LIN bus signal using a current-limited wave-shaping driver which reduces electromagnetic emissions (EME). The receiver converts the data stream to logic-level signals that are sent to the microprocessor through the open-drain RXD pin. 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 pull-up resistor (45 kΩ) and a series diode.

Ultra-low current consumption is possible using the sleep mode. The TLIN1028S-Q1 provides two methods to wake up from sleep mode: EN pin and LIN bus. The device integrates a low dropout voltage regulator with a wide input from V_SUP providing 5 V ±2% or 3.3 V ±2% with up to 70 mA of current depending upon system implementation. nRST is asserted high when V_CC increases above UV_CC and stays high as long as V_CC is above this threshold.