Document Number: MC33399
Rev. 10.0, 4/2013
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. This device
is powered by SMARTMOS technology.
The 33399 is a physical layer component dedicated to automotive
sub-bus applications. It offers communication speed 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.
• Nominal operation from VSUP 7.0 to 18 V DC, functional up to
27 V DC battery voltage and capable of handling 40 V during load
• Active bus waveshaping to minimize radiated emission
• ±5.0 kV ESD on LIN Bus Pin, ±4.0 kV ESD on other pins
• 30 k internal pull-up resistor
• Ground shift operation and ground disconnection Fail-safe at
• 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
LIN PHYSICAL INTERFACE
EF SUFFIX (PB-FREE)
8 PIN SOICN
(Add R2 Suffix for
Tape and Reel)
-40 to 125 °C
Figure 1. 33399 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2006-2013. All rights reserved.