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参数资料
| 型号： | 0ICAW-001-XTP |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 网络接口 |
| 英文描述： | DATACOM, INTERFACE CIRCUIT, PDSO20 |
| 封装： | 0.300 INCH, GREEN, PLASTIC, SOIC-20 |
| 文件页数： | 1/2页 |
| 文件大小： | 266K |
| 代理商： | 0ICAW-001-XTP |
AMIS-42770
-
Dual
High-Speed
CAN
T
ransceiver
Feature
Sheet
AMIS-42770
-
Dual
High-Speed
CAN
T
ransceiver
Feature
Sheet
AMI Semiconductor
AMIS-42770 Dual High-Speed CAN Transceiver
For Long Networks
Product Description
Fully compatible with the “ISO 11898-2” standard
Certified “Authentication on CAN Transceiver
Conformance (d1.1)”
Wide range of bus communication speeds (up to 1
Mbit/s in function of the bus topology)
Allows low transmit data rate in networks exceeding 1km
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 electromagnetic susceptibility (EMS)
No disturbance of the bus lines with an un-powered
node
Prolonged dominant time-out function allowing
communication speeds down to 1kbit/s
Thermal protection
Bus pins protected against transients
Short circuit proof to supply voltage and ground
Key Features
The AMIS-42770 dual CAN transceiver is the interface
between controller area network (CAN) protocol
controller and up to two physical busses. The AMIS-
42770 can also be used as a CAN repeater, transferring
serial data from one physical bus to the other. It can be
used for both 12V and 24V systems.
The circuit consists of the following blocks:
Two differential line transmitters
Two differential line receivers
Interface to the CAN protocol handler
Interface to expand the number of CAN busses
Logic block including repeater function and the
feedback suppression
Thermal shutdown circuit (TSD)
Due to the wide common-mode voltage range of the
receiver inputs, the AMIS-42770 is able to reach
outstanding levels of EMS. Similarly, extremely low EME
is achieved by the excellent matching of the output
signals.
Important Characteristics
Applications & Benefits
The AMIS-42770 is the industrial version of the AMIS-
42700 and primarily intended for applications where
long network lengths are mandatory. To cope with the
long bus delay the communication speed needs to be
low. The AMIS-42770 has a prolonged dominant time
out function which allows low transmit data rates down
to 1kbit/s.
The AMIS-42770 is especially designed to provide the
link between a CAN controller protocol IC and two
physical busses. It is able to operate in three different
modes:
Dual CAN
CAN-bus extender
CAN-bus repeater
Typical examples can be found in elevators, in-building
networks, process control, and trains.
Symbol
Parameter
Conditions
Min.
Max.
Units
VCANHx
DC voltage at pin CANH
0 < VCC < 5.25V; no time limit
-45
+45
V
VCANLx
DC voltage at pin CANL
0 < VCC < 5.25V; no time limit
-45
+45
V
Vi(dif)(bus_dom)
Differential bus output voltage in
dominant state
42.5
Ω < RLT < 60Ω
1.5
3
V
CM-range
Input common-mode range for
comparator
Guaranteed differential receiver threshold
and leakage current
-35
+35
V
VCM-peak
Common-mode peak
See data sheet
-1000
1000
mV
VCM-step
Common-mode step
See data sheet
-250
250
mV
For additional information: www.amis.com/products/transceivers/amis_42770.html
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