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LTC2862A-2

更新时间： 2024-11-06 02:51:59
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
22页 478K
描述
±60V Fault Protected 3V to 5.5V RS485/RS422 Transceiver with Level 4 IEC ESD

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LTC2862A-2 数据手册

 浏览型号LTC2862A-2的Datasheet PDF文件第2页浏览型号LTC2862A-2的Datasheet PDF文件第3页浏览型号LTC2862A-2的Datasheet PDF文件第4页浏览型号LTC2862A-2的Datasheet PDF文件第5页浏览型号LTC2862A-2的Datasheet PDF文件第6页浏览型号LTC2862A-2的Datasheet PDF文件第7页 
LTC2862A  
±±60V FaulVꢀPolecledV30VloV5.50V  
RS485/RS422VTPFnsceivePV  
wilhVLeveuV4VIECVESD  
FeaTures  
DescripTion  
TheLTC®2862Aisalowpower,20Mbpsor250kbpsRS485/  
RS422 transceiver operating on 3V to 5.5V supplies with  
60V overvoltage fault protection on the interface pins  
during all modes of operation, including power-down.  
Improvements were made to the LTC2862 for greater ro-  
bustness and signal integrity: 40kV HBM and Level 4 IEC  
ESD protection on the interface pins; increased resistance  
toelectricaloverstress;increasedreceivernoiseimmunity;  
additional receiver noise filtering on the LTC2862A-2; and  
an improved failsafe function optimized for high speed in  
the LTC2862A-1 and noise rejection in the LTC2862A-2.  
Low EMI slew rate limited data transmission is available  
inthe250kbpsLTC2862A-2option,whiletheLTC2862A-1  
operates to 20Mbps.  
n
Protected from Overvoltage Line Faults to ±±6V  
3V to 5.5V Supply Voltage  
n
n
n
n
n
n
n
n
n
n
26Mbps or Low EMI 256kbps Data Rate  
±46kV ꢀHM ESD Interface Pinsꢁ ±ꢂ5kV Other Pins  
Enhanced Receiver and Failsafe Noise Immunity  
IEC Level 4 ESD and EFT on Interface Pins  
Extended Common Mode Range: ±25V  
Guaranteed Failsafe Receiver Operation  
High Input Impedance Supports 224 Nodes  
MP-Grade Option Available (–55°C to 125°C)  
Fully Balanced Differential Receiver Thresholds for  
Low Duty Cycle Distortion  
n
n
n
n
Current Limited Drivers and Thermal Shutdown  
Compliant with TIA/EIA-485-A  
Pin Compatible with LTC2862 and LT®1785  
Available in DFN and Leaded Packages  
Extended 25V input common mode range and full fail-  
safe operation improve data communication reliability in  
electrically noisy environments and in the presence of  
large ground loop voltages.  
applicaTions  
n
Supervisory Control and Data Acquisition (SCADA)  
n
proDucT selecTion GuiDe  
Industrial Control and Instrumentation Networks  
n
Automotive and Transportation Electronics  
MAX DATA  
n
PART NUMHER  
LTC2862A-1  
LTC2862A-2  
DUPLEX  
HALF  
ENAHLES  
YES  
RATE (bps)  
Building Automation, Security Systems and HVAC  
n
20M  
Medical Equipment  
Lighting and Sound System Control  
n
HALF  
YES  
250k  
L, LT, LTC, LTM, Linear Technology the Linear logo and µModule are registered trademarks of  
Analog Devices, Inc.. All other trademarks are the property of their respective owners.  
Typical applicaTion  
LTC28±2A-ꢂ Receiving ꢂ6Mbps ±266mV Differential  
Signal with ꢂMꢀz ±25V Common Mode Sweep  
RS485 Link With Large Ground Loop Voltage  
LTC2862A  
LTC2862A  
A,B  
A,B  
50V/DIV  
V
V
CC2  
CC1  
RO1  
RE1  
DE1  
R
R
RO2  
RE2  
DE2  
A–B  
A–B  
0.5V/DIV  
DI1  
D
D
DI2  
RO  
V GROUND LOOP  
≤25V PEAK  
RO  
5V/DIV  
2862A TA01a  
GND1  
GND2  
2862A TA01b  
100ns/DIV  
2862af  
1
For more information www.linear.com/LTC2862A  
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