• LIN Physical Layer Specification Revision 2.0 compliant. Conforms to SAEJ2602 Recommended Practice for LIN
• LIN Bus Speed up to 20 kbps
• ESD Protection to 12 kV (Human Body Model) on LIN Pin
• LIN Pin Handles Voltage from –40 V to 40 V
• Survives Transient Damage in Automotive Environment (ISO 7637)
• Operation with Supply from 7-V to 27-V DC
• Two Operation Modes: Normal and Low-Power (Sleep) Mode
• Low Current Consumption in Low Power Mode
• Wake-Up Available from LIN Bus, Wake-Up Input (External Switch) or Host MCU
• Interfaces to MCU with 5-V or 3.3-V I/O Pins
• Dominant State Timeout Protection on TXD Pin
• Wake-Up Request on RXD Pin
• Control of External Voltage Regulator (INH Pin)
• Integrated Pull-Up Resistor and Series Diode for LIN Slave Applications
• Low EME (Electromagnetic Emissions), High EMI (Electromagnetic Immunity)
• Bus Terminal Short-Circuit Protected for Short to Battery or Short to Ground
• Thermally Protected
• Ground Disconnection Fail-Safe at System Level
• Ground Shift Operation at System Level
• Unpowered Node Does Not Disturb the Network

• Industrial Sensing
• White Goods Distributed Control

The TPIC1021 is the LIN (Local Interconnect Network) physical interface, which integrates the serial transceiver with wake up and protection features. The LIN bus is a single wire, bi-directional bus typically used for low-speed in-vehicle networks using baud rates between 2.4 kbps and 20 kbps.

The LIN bus has two logical values: the dominant state (voltage near ground) represents a logic 0 and the recessive state (voltage near battery) and represents logic 1.

In the recessive state the LIN bus is pulled high by the TPIC1021’s internal pull-up resistor (30 kΩ) and series diode, so no external pullup components are required for slave applications. Master applications require an external pullup resistor (1 kΩ) plus a series diode.