Local Interconnect Network (LIN) Physical Interface

Local Interconnect Network (LIN) is a serial communication protocol designed to support automotive networks in conjunction with Controller Area Network (CAN). As the lowest level of a hierarchical network, LIN enables cost-effective communication with sensors and actuators when all the features of CAN are not required.

The 33399 is a Physical Layer component dedicated to automotive sub-bus applications. It offers speed communication from 1.0 kbps to 20 kbps, and up to 60 kbps for Programming Mode. It has two operating modes: Normal and Sleep.

The 33399 supports LIN Protocol Specification 1.3.

Features

• Nominal Operation from VSUP 7.0 V to 18 V DC, Functional up to 27 V DC Battery Voltage and Capable of Handling 40 V During Load Dump

• Active Bus Waveshaping to Minimize Radiated Emission

• ±5.0 kV ESD on LIN Bus Pin, ±4.0 kV ESD on Other Pins

• 30 kΩ Internal Pullup Resistor

• Ground Shift Operation and Ground Disconnection Fail-Safe at Module Level

• An Unpowered Node Does Not Disturb the Network

• 20 µA in Sleep Mode

• Wake-Up Capability from LIN Bus, MCU Command and Dedicated High Voltage Wake-Up Input (Interface to External Switch)

• Interface to MCU with CMOS-Compatible I/O Pins

• Control of External Voltage Regulator

• Pb-FREE packaging designated by package code EF