
Semiconductor Components Industries, LLC, 2009
January, 2009 Rev. 3
1
Publication Order Number:
AMIS42671/D
AMIS-42671
High Speed Autobaud CAN
Transceiver
General Description
The AMIS42671 CAN transceiver with autobaud is the interface
between a controller area network (CAN) protocol controller and the
physical bus. It may be used in both 12 V and 24 V systems. The
transceiver provides differential transmit capability to the bus and
differential receive capability to the CAN controller. Due to the wide
commonmode voltage range of the receiver inputs, the AMIS42671
is able to reach outstanding levels of electromagnetic susceptibility
(EMS). Similarly, extremely low electromagnetic emission (EME) is
achieved by the excellent matching of the output signals.
The AMIS42671 is primarily intended for industrial network
applications where long network lengths are mandatory. Examples are
elevators, inbuilding networks, process control and trains. To cope
with the long bus delay the communication speed needs to be low.
AMIS42671 allows low transmit data rates down 10 kbit/s or lower.
The autobaud function allows the CAN controller to determine the
incoming baud rate without influencing the CAN communication on
the bus.
Features
Fully compatible with the ISO 118982 standard
Autobaud function
Wide range of bus communication speed (0 up to 1 Mbit/s)
Allows low transmit data rate in networks exceeding 1 km
Ideally suited for 12 V and 24 V industrial and automotive
applications
Low electromagnetic emission (EME), commonmode choke is no
longer required
Differential receiver with wide commonmode range ($35 V) for
high EMS
No disturbance of the bus lines with an unpowered node
Thermal protection
Bus pins protected against transients
Silent mode in which the transmitter is disabled
Short circuit proof to supply voltage and ground
Logic level inputs compatible with 3.3 V devices
ESD protection for CAN bus at $8 kV
These are PbFree Devices*
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
PIN ASSIGNMENT
(Top View)
5
6
7
8
1
2
3
4
TxD
RxD
AUTB
GND
CANL
AMIS
42671
PC20070929.1
See detailed ordering and shipping information in the package
ORDERING INFORMATION
VCC
CANH
VREF