The TLIN1028-Q1 is used for the LIN communication interface due to its wide operating ranges and protection features that it provides; such as ESD protection, undervoltage protection, DTO protection, and thermal protection. All these protection features ensure that the LIN transceiver operates normally without damaging itself or other components.

The local decoupling capacitors (C20 and C21) and the LDO output capacitors (C18 and C19) are chosen based on the recommendations given on the data sheet. The data sheet recommends a 200-pF capacitor between the LIN pin and ground for slave applications. C4 is chosen to be 220 pF for filtering noise from the LIN signal. The 10-kΩ resistor (R20) is used as a pullup resistor from the RXD pin to 3.3 V. R21 is used to limit the input current to the device and C26 is used to filter noise.

Figure 2-13 TLIN1028-Q1