Freescale Semiconductor
Technical Data
Document Number: MC33661
Rev. 8.0, 4/2013
Local Interconnect Network
(LIN) Enhanced Physical
Interface with Selectable Slew-
Rate
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 33661 is a physical layer component dedicated to automotive
LIN sub-bus applications. It offers slew-rate selection for optimized
operation at 10 kbps and 20 kbps, fast baud rate (above 100 kbps) for
test and programming modes, excellent radiated emission
performance, and safe behavior in the event of LIN bus short-to-ground
or LIN bus leakage during low power mode.
The 33661 is compatible with LIN Protocol Specification 2.0.
Features
• Operational from V
SUP
6.0 V to 18 V DC, functional up to 27 V DC,
and handles 40 V during load dump
• Active bus waveshaping offering excellent radiated emission
performance
• 5.0 kV ESD on LIN bus pin
• 30 k internal pull-up resistor
• LIN bus short-to-ground or high leakage in Sleep mode
• -18 V to +40 V DC voltage at LIN pin
• 8.0
A
in Sleep mode
• Local and remote wake-up capability reported by INH and RXD pins
• 5.0 V and 3.3 V compatible digital inputs without any external
components required
33661
LIN PHYSICAL INTERFACE
EF SUFFIX (PB-FREE)
98ASB42564B
8-PIN SOICN
ORDERING INFORMATION
Device
(For Tape and
Reel, add an R2
Suffix)
MC33661PEF
Temperature
Range (T
A
)
- 40 to 125°C
Package
8 SOICN
V
PWR
33661
WAKE
V
DD
Regulator
12 V
5.0
V
VSUP
INH
EN
MCU
RXD
TXD
LIN
GND
LIN Bus
Figure 1. 33661 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.
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