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The ISO9141 standard for K-line existed before the LIN standard was created, and the physical layer for the LIN standard was based on this. The major difference between the LIN standards and the n K-Line (ISO 9141 and ISO14230 with the data link layer) standard is that the slave nodes usually have a high impedance pull up resistor >200kΩ in K-line, but have a much stronger pull-up resistor in LIN. LIN transceivers have a built in pull-up resistance on the order of 20-60kΩ.
Also, the LIN standard specifies data rates from 1kbps to 20kbps, whereas K-Line can go as low as a few bits per second. Therefore, most of the LIN transceivers we sell have a feature called dominant state timeout on them so that the bus cannot get permanently stuck dominant in the case of a fault. If you plan to be using data rates lower than 1KBPS, I would recommend looking at the SN65HVDA195-Q1 which does not have this dominant state timeout feature.
