The TLIN1027-Q1 is a Local Interconnect Network (LIN) physical layer transceiver, compatible with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A and ISO/DIS 17987–4 standards, with integrated wake-up 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 kbps to 20 kbps. The TLIN1027-Q1 LIN receiver works up to 100 kbps supporting in-line programming. The LIN protocol data stream on the TXD input is converted by the TLIN1027-Q1 into a LIN bus signal using a current-limited wave-shaping driver as outlined by the LIN physical layer specification. 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. No external pull-up components are required for responder mode applications. Commander mode applications require an external pull-up resistor (1 kΩ) plus a series diode per the LIN specification. The TLIN1027-Q1 provides many protection features such as immunity to ESD and high bus standoff voltage. The device also provides two methods to wake up: EN pin and from the LIN bus.