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SN65HVD1787

更新时间： 2024-11-25 05:18:11
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
19页 669K
描述
70-V Fault-Protected RS-485 Transceivers

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SN65HVD1787 数据手册

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SN65HVD1785, SN65HVD1786  
SN65HVD1787, SN65HVD1791  
SN65HVD1792, SN65HVD1793  
www.ti.com ................................................................................................................................................... SLLS872C–JANUARY 2008–REVISED MARCH 2008  
70-V Fault-Protected RS-485 Transceivers  
1
FEATURES  
•
Bus-Pin Fault Protection to > ±70 V  
•
Low Power Consumption  
•
Common-Mode Voltage Range (–20 V to 25 V)  
More Than Doubles TIA/EIA 485 Requirement  
–
–
Low Standby Supply Current, 1 µA Typ  
ICC 5 mA Quiescent During Operation  
•
Bus I/O Protection  
APPLICATIONS  
–
±16 kV JEDEC HBM Protection  
•
Designed for RS-485 and RS-422 Networks  
•
•
Reduced Unit Load for Up to 256 Nodes  
Failsafe Receiver for Open-Circuit,  
Short-Circuit and Idle-Bus Conditions  
DESCRIPTION  
These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis-wiring  
faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high  
levels of protection to human-body model specifications.  
These devices combine a differential driver and a differential receiver, which operate from a single power supply.  
In the 'HVD1785, 'HVD1786, and 'HVD1787, the driver differential outputs and the receiver differential inputs are  
connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. In the 'HVD1791,  
the driver differential outputs and the receiver differential inputs are separate pins, to form a bus port suitable for  
full-duplex (four-wire bus) communication. These ports feature a wide common-mode voltage range, making the  
devices suitable for multipoint applications over long cable runs. These devices are characterized from –40°C to  
105°C.  
VFAULT up to 70 V  
M0092-01  
PRODUCT SELECTION GUIDE  
PART NUMBER  
SN65HVD1785  
DUPLEX  
Half  
SIGNALING RATE  
115 kbps  
NODES  
Up to 256  
CABLE LENGTH  
1500 m  
SN65HVD1786  
Half  
1 Mbps  
Up to 256  
Up to 64  
Up to 256  
Up to 256  
Up to 64  
150 m  
50 m  
SN65HVD1787  
Half  
10 Mbps  
115 kbps  
1 Mbps  
SN65HVD1791  
Full  
1500 m  
150 m  
50 m  
SN65HVD1792 (Preview)  
SN65HVD1793 (Preview)  
Full  
Full  
10 Mbps  
For similar features with 3.3 V supply operation, see the SN65HVD1781 (SLLS877).  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2008, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
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SN65HVD1787 替代型号

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