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AMIS42675ICAH2G PDF预览

AMIS42675ICAH2G

更新时间： 2024-01-07 17:05:43
品牌 Logo 应用领域
安森美 - ONSEMI 网络接口电信集成电路电信电路光电二极管
页数 文件大小 规格书
12页 192K
描述
High Speed Low Power CAN Transceiver for Long Wire Networks

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AMIS42675ICAH2G 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：SOIC包装说明：SOP,
针数：8Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：5.77
JESD-30 代码：R-PDSO-G8长度：4.9276 mm
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.7272 mm标称供电电压：5 V
表面贴装：YES电信集成电路类型：INTERFACE CIRCUIT
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.937 mm
Base Number Matches：1

AMIS42675ICAH2G 数据手册

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AMIS−42675  
FUNCTIONAL DESCRIPTION  
Operating Modes  
AMIS−42675 provides two modes of operation as  
illustrated in Table 5. These modes are selectable through  
Pin STB.  
Table 5. OPERATING MODES  
Pin RXD  
Low  
High  
Mode  
Normal  
Pin STB  
Low  
Bus Dominant  
Bus Recessive  
Standby  
High  
Wake−up Request Detected  
No wake−up Request Detected  
Normal Mode  
Overtemperature Detection  
In the normal mode, the transceiver is able to  
communicate via the bus lines. The signals are transmitted  
and received to the CAN controller via the Pins TxD and  
RxD. The slopes on the bus lines outputs are optimized to  
give extremely low EME.  
A thermal protection circuit protects the IC from damage  
by switching off the transmitter if the junction temperature  
exceeds a value of approximately 160°C. Because the  
transmitter dissipates most of the power, the power  
dissipation and temperature of the IC is reduced. All other  
IC functions continue to operate. The transmitter off−state  
resets when Pin TxD goes high. The thermal protection  
circuit is particularly needed when a bus line short circuits.  
Standby Mode  
In stand−by mode both the transmitter and receiver are  
disabled and a very low−power differential receiver  
monitors the bus lines for CAN bus activity. The bus lines  
are terminated to ground and supply current is reduced to a  
minimum, typically 10 mA. When a wake−up request is  
detected by the low−power differential receiver, the signal  
is first filtered and then verified as a valid wake signal after  
High Communication Speed Range  
The transceiver is primarily intended for industrial  
applications. It allows very low baud rates needed for long  
bus length applications. But also high speed communication  
is possible up to 1 Mbit/s.  
a time period of t  
transceiver to inform the controller of the wake−up request.  
, the RxD Pin is driven low by the  
BUS  
Fail Safe Features  
A current−limiting circuit protects the transmitter output  
stage from damage caused by accidental short circuit to  
either positive or negative supply voltage, although power  
dissipation increases during this fault condition.  
Split Circuit  
The V  
Pin is operational only in normal mode. In  
SPLIT  
standby mode this pin is floating. The V  
is connected  
SPLIT  
as shown in Figure 2 and its purpose is to provide a stabilized  
The Pins CANH and CANL are protected from  
automotive electrical transients (according to ISO 7637; see  
Figure 3). Pins TxD and STB are pulled high internally  
should the input become disconnected. Pins TxD, STB and  
RxD will be floating, preventing reverse supply should the  
DC voltage of 0.5 x V to the bus avoiding possible steps  
CC  
in the common−mode signal therefore reducing EME. These  
unwanted steps could be caused by an un−powered node on  
the network with excessive leakage current from the bus that  
shifts the recessive voltage from its nominal 0.5 x V  
voltage.  
V
CC  
supply be removed.  
CC  
Wake−up  
Once a valid wake−up (dominant state longer than t  
)
BUS  
has been received during the standby mode, the RxD Pin is  
driven low.  
http://onsemi.com  
5
 
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