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AMIS42671ICAB1RG

P1-P3P4-P6P7-P9P10-P12P13-P14
© Semiconductor Components Industries, LLC, 2009
January, 2009 − Rev. 3
1 Publication Order Number:
AMIS−42671/D
AMIS-42671
High Speed Autobaud CAN
Transceiver
General Description
The AMIS−42671 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
common−mode voltage range of the receiver inputs, the AMIS−42671
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 AMIS−42671 is primarily intended for industrial network
applications where long network lengths are mandatory. Examples are
elevators, in−building networks, process control and trains. To cope
with the long bus delay the communication speed needs to be low.
AMIS−42671 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 11898−2 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), common−mode choke is no
longer required
• Differential receiver with wide common−mode range ($35 V) for
high EMS
• No disturbance of the bus lines with an un−powered 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 Pb−Free Devices*
*For additional information on our Pb−Free 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
dimensions section on page 12 of this data sheet.
ORDERING INFORMATION
V
CC
CANH
V
REF
AMIS−42671
http://onsemi.com
2
Table 1. TECHNICAL CHARACTERISTICS
Symbol Parameter Condition Max Max Unit
V
CANH
DC Voltage at Pin CANH 0 < V
CC
< 5.25V; no time limit −45 +45 V
V
CANL
DC Voltage at Pin CANL 0 < V
CC
< 5.25V; no time limit −45 +45 V
V
o(dif)(bus_dom)
Differential Bus Output Voltage in Dominant
State
42.5W < R
LT
< 60W
1.5 3 V
t
pd(rec−dom)
Propagation Delay TxD to RxD See Figure 7 70 245 ns
t
pd(dom−rec)
Propagation Delay TxD to RxD See Figure 7 100 245 ns
C
M−range
Input Common−Mode Range for Comparator Guaranteed differential receiver
threshold and leakage current
−35 +35 V
V
CM−peak
Common−Mode Peak See Figures 8 and 9 (Note 1) −500 500 mV
V
CM−step
Common−Mode Step See Figures 8 and 9 (Note 1) −150 150 mV
1. The parameters V
CM−peak
and V
CM−step
guarantee low electromagnetic emission.
AMIS−42671
http://onsemi.com
3
Figure 1. Block Diagram
CANH
CANL
AMIS−42671
GND
RxD
V
CC
2
7
6
5
AUTB
1
Driver
control
Thermal
shutdown
V
CC
8
4
PC20070930.2
TxD
3
V
REF
COMP
V
cc
/
2
+
R
i(cm)
R
i(cm)
Auto-
baud
Control
Slope
Control
Table 2. PIN DESCRIPTION
Pin Name Description
1 TxD Transmit Data Input; Low Input → Dominant Driver; Internal Pullup Current
2 GND Ground
3 V
CC
Supply Voltage
4 RxD Receive Data Output; Dominant Transmitter → Low Output
5 V
REF
Reference Voltage Output
6 CANL Low−Level CAN Bus Line (Low in Dominant Mode)
7 CANH High−Level CAN Bus Line (High in Dominant Mode)
8 AUTB Autobaud Mode Control Input; Internal Pulldown Current
P1-P3P4-P6P7-P9P10-P12P13-P14

AMIS42671ICAB1RG

Mfr. #:
Buy AMIS42671ICAB1RG
Manufacturer:
ON Semiconductor
Description:
CAN Interface IC HS CAN TRANSCEIVER
Lifecycle:
New from this manufacturer.
Delivery:
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