What is the operating voltage of an automotive LIN bus?

[LeJeremiah]

LIN bus operates at 12V. The master node is configured with a 1kΩ resistor terminating to 12V power supply, while slave nodes are configured with 30kΩ resistors terminating to 12V power supply. Below is relevant information about LIN bus: 1. Definition: LIN bus is a low-cost serial communication network defined for automotive distributed electronic systems, serving as a complement to other automotive multiplex networks like Controller Area Network (CAN). It is suitable for applications that do not require high bandwidth, performance, or fault tolerance. LIN bus is based on SCI (UART) data format, adopting a single-master/multiple-slave mode, representing a special case of UART. 2. Purpose: LIN aims to provide auxiliary functions for existing automotive networks (e.g., CAN bus), making it a secondary bus network. In applications where CAN bus bandwidth and multifunctionality aren't required - such as communication between smart sensors and braking devices - using LIN bus can significantly reduce costs.