AMIS-42671 Datasheet, PDF (1/12 Pages) AMI SEMICONDUCTOR – High-Speed CAN Transceiver

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
Table 1: Technical Characteristics
Symbol
Parameter
V_CANH
V_CANL
V_{i(dif)(bus_dom)}
DC voltage at pin CANH
DC voltage at pin CANL
Differential bus output voltage in dominant state
t_pd(rec-dom)
Propagation delay TxD to RxD
t_pd(dom-rec)
Propagation delay TxD to RxD
C_M-range
Input common-mode range for comparator
V_CM-peak
V_CM-step
Common-mode peak
Common-mode step
Conditions
0 < V_CC < 5.25V; no time limit
0 < V_CC < 5.25V; no time limit
42.5Ω < R_LT < 60Ω
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)
Min.
-45
-45
1.5
70
100
-35
-500
-150
Note: The parameters V_CM-peak and V_CM-step guarantee low electromagnetic emission.
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
1
www.amis.com Specifications subject to change without notice