AMIS-42670 Datasheet, PDF (1/12 Pages) AMI SEMICONDUCTOR – High-Speed CAN Transceiver

AMIS-42670 High-Speed CAN Transceiver
For Long Networks
Data Sheet
1.0 General Description
The AMIS-42670 CAN transceiver is the interface between a controller area network (CAN) protocol controller and the physical bus and
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-42670 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-42670 is the industrial version of the AMIS-30660 and 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-42670 allows low transmit data rates down 10 Kbit/s or lower.
2.0 Key Features
• Fully compatible with the ISO 11898-2 standard
• Certified “Authentication on CAN Transceiver Conformance (d1.1)”
• 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
3.0 Technical Characteristics
Table 1: Technical Characteristics
Symbol
Parameter
V_CANH
DC voltage at pin CANH
V_CANL
DC voltage at pin CANL
V_{i(dif)(bus_dom)}
Differential bus output voltage in dominant state
t_pd(rec-dom)
t_pd(dom-rec)
C_M-range
Propagation delay TxD to RxD
Propagation delay TxD to RxD
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 7
See Figure 7
Guaranteed differential receiver threshold and
leakage current
See Figures 8 and 9 (Notes)
See Figures 8 and 9 (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)
0ICAH-002-XTD
Ordering Code (Tape)
0ICAH-002-XTP
Marketing Name
AMIS 42670NGA
Package
SOIC-8 GREEN
Temp. Range
-40°C…125°C
AMI Semiconductor – October 07, Rev. 1.0
1
www.amis.com Specifications subject to change without notice