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SN65HVD1786DR Datasheet(PDF) 1 Page - Texas Instruments

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Part # SN65HVD1786DR
Description  70-V Fault-Protected RS-485 Transceivers
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN65HVD1786DR Datasheet(HTML) 1 Page - Texas Instruments

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1
FEATURES
APPLICATIONS
DESCRIPTION
V
upto70V
FAULT
M0092-01
SN65HVD1785, SN65HVD1786
SN65HVD1787, SN65HVD1791
SN65HVD1792, SN65HVD1793
www.ti.com ....................................................................................................................................................... SLLS872E – JANUARY 2008 – REVISED JULY 2008
70-V Fault-Protected RS-485 Transceivers
• Bus-Pin Fault Protection to > ±70 V
• Low Power Consumption
• Common-Mode Voltage Range (–20 V to 25 V)
Low Standby Supply Current, 1
µA Typ
More Than Doubles TIA/EIA 485 Requirement
ICC 5 mA Quiescent During Operation
• Bus I/O Protection
• Power-Up, Power-Down Glitch-Free Operation
±16 kV JEDEC HBM Protection
• Reduced Unit Load for Up to 256 Nodes
• Designed for RS-485 and RS-422 Networks
• Failsafe Receiver for Open-Circuit,
Short-Circuit and Idle-Bus Conditions
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.
PRODUCT SELECTION GUIDE
PART NUMBER
DUPLEX
SIGNALING RATE
NODES
CABLE LENGTH
SN65HVD1785
Half
115 kbps
Up to 256
1500 m
SN65HVD1786
Half
1 Mbps
Up to 256
150 m
SN65HVD1787
Half
10 Mbps
Up to 64
50 m
SN65HVD1791
Full
115 kbps
Up to 256
1500 m
SN65HVD1792 (Preview)
Full
1 Mbps
Up to 256
150 m
SN65HVD1793 (Preview)
Full
10 Mbps
Up to 64
50 m
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.


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