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AMI SEMICONDUCTOR

AMIS-42671 Datasheet Preview

AMIS-42671 Datasheet

High-Speed CAN Transceiver

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AMIS-42671 High-Speed CAN Transceiver
For Long Networks
Data Sheet
1.0 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 12V and 24V 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.
2.0 Key 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 12V and 24V industrial and automotive applications
Low electromagnetic emission (EME) common-mode choke is no longer required
Differential receiver with wide common-mode range (+/- 35V) 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 3.3V devices
ESD protection for CAN bus at ± 8 kV
3.0 Technical Characteristics
www.DataSheet4U.com
Table 1: Technical Characteristics
Symbol
VCANH
VCANL
Vi(dif)(bus_dom)
tpd(rec-dom)
tpd(dom-rec)
CM-range
Parameter
DC voltage at pin CANH
DC voltage at pin CANL
Differential bus output voltage in dominant state
Propagation delay TxD to RxD
Propagation delay TxD to RxD
Input common-mode range for comparator
VCM-peak
VCM-step
Common-mode peak
Common-mode step
Conditions
0 < VCC < 5.25V; no time limit
0 < VCC < 5.25V; no time limit
42.5< RLT < 60
See Figure 8
See Figure 8
Guaranteed differential receiver threshold and
leakage current
See Figure 9 and Figure 10 (Notes)
See Figure 9 and Figure 10 (Notes)
Note: The parameters VCM-peak and VCM-step guarantee low electromagnetic emission.
Min.
-45
-45
1.5
70
100
-35
-500
-150
Max.
+45
+45
3
245
245
+35
500
150
Unit
V
V
V
ns
ns
V
mV
mV
4.0 Ordering Information
Ordering Code (Tubes)
0ICAB-001-XTD
Ordering Code (Tape)
0ICAB-001-XTP
Marketing Name
AMIS 42671AGA
Package
SOIC-8 GREEN
Temp. Range
-40°C…125°C
AMI Semiconductor – Oct. 07, Rev. 1.0
www.amis.com Specifications subject to change without notice
1




AMI SEMICONDUCTOR

AMIS-42671 Datasheet Preview

AMIS-42671 Datasheet

High-Speed CAN Transceiver

No Preview Available !

AMIS-42671 High-Speed CAN Transceiver
For Long Networks
Data Sheet
5.0 Block Diagram
AUTB 8
VCC
TxD 1
RxD 4
VREF 5
Auto-
baud
Control
PC20070930.2
6.0 Typical Application
Thermal
shutdown
VCC
3
Slope
Control
Driver
control
AMIS-42671
7 CANH
6 CANL
COMP
Ri(cm)
Vcc/2
+
Ri(cm)
Figure 1: Block Diagram
2
GND
ww6w.1.DAaptapSlhiceaett4ioUn.cSomchematic
VBAT
IN 5V-reg OUT
PC20071001.1
VCC
CAN
controller
GND
VCC
AUTB
3
8 7 CANH
RxD
4
AMIS-
5 VREF
42671
TxD 6 CANL
1
2
GND
60 60
47 nF
CAN
BUS
60 60
47 nF
Figure 2: Application Diagram
AMI Semiconductor – Oct. 07, Rev. 1.0
www.amis.com Specifications subject to change without notice
2


Part Number AMIS-42671
Description High-Speed CAN Transceiver
Maker AMI SEMICONDUCTOR
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AMIS-42671 Datasheet PDF






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