AMIS-42673 High Speed CAN Transceiver
Data Sheet
For Long Networks
1.0 Introduction
The AMIS-42673 CAN transceiver 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 digital interface level is powered from a 3.3V supply providing true I/O voltage levels
for 3.3V CAN controllers.
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-42673 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-42673 is primarily intended for 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-42673 allows
low transmit data rates down to 10 kbit/s or lower.
2.0 Key Features
• True 3,3V or 5,0V logic level interface
• Fully compatible with the “ISO 11898-2” standard
• Wide range of bus communication speed (0 up to 1Mbit/s)
• Allows low transmit data rate in networks exceeding 1 km
• Ideally suited for 12V and 24V applications
• Low electromagnetic emission (EME). Common-mode-choke is no longer required
• Differential receiver with wide common-mode range (+/- 35V) for high electromagnetic susceptibility (EMS)
• No disturbance of the bus lines with an un-powered node
• Thermal protection
• Bus pins protected against transients
• Short circuit proof to supply voltage and ground
• ESD protection for CAN bus at ± 8 kV
3.0 Technical Characteristics
Table 1: Technical Characteristics
Symbol
VCANH
VCANL
Parameter
Conditions
Min
Max
Unit
DC voltage at pin CANH
DC voltage at pin CANL
0 < VCC < 5.25V; no time limit
0 < VCC < 5.25V; no time limit
-45
+45
V
-45
+45
V
Differential bus output voltage in
dominant state
Vi(dif)(bus_dom)
1.5
3
V
42.5Ω < RLT < 60Ω
tpd(rec-dom)
tpd(dom-rec)
Propagation delay TxD to RxD
Propagation delay TxD to RxD
Figure 7
Figure 7
100
100
230
245
ns
ns
Input common-mode range for
comparator
Guaranteed differential receiver
threshold and leakage current
Figure 8 and
Figure 9 (Note 1)
Figure 8 and
CM-range
VCM-peak
VCM-step
-35
+35
500
150
V
Common-mode peak
-500
-150
mV
mV
Common-mode step
Figure 9 (Note 1)
Note 1: The parameters VCM-peak and VCM-step guarantee low EME.
4.0 Ordering Information
Ordering Code (Tubes)
0ICAG-001-XTD
Ordering Code (Tape)
0ICAG-001-XTP
Marketing Name
AMIS 42673AGA
Package
SOIC-8 GREEN
Temp. Range
-40°C…125°C
AMI Semiconductor – October 07, Rev. 1.0
www.amis.com Specifications subject to change without notice
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