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SN65HVD1787 Datasheet(PDF) 1 Page - Texas Instruments

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Part # SN65HVD1787
Description  70-V Fault-Protected RS-485 Transceivers
Download  19 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN65HVD1787 Datasheet(HTML) 1 Page - Texas Instruments

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V
upto70V
FAULT
M0092-01
SN65HVD1785, SN65HVD1786
SN65HVD1787, SN65HVD1791
SN65HVD1792, SN65HVD1793
www.ti.com
SLLS872H – JANUARY 2008 – REVISED FEBRUARY 2010
Fault-Protected RS-485 Transceivers With Extended Common-Mode Range
Check for Samples: SN65HVD1785, SN65HVD1786, SN65HVD1787, SN65HVD1791, SN65HVD1792, SN65HVD1793
1
FEATURES
Bus-Pin Fault Protection to:
Failsafe Receiver for Open-Circuit,
Short-Circuit and Idle-Bus Conditions
> ±70 V ('HVD1785, 86,91,92)
Low Power Consumption
> ±30 V ('HVD1787, 93)
Low Standby Supply Current, 1 mA Typ
Common-Mode Voltage Range (–20 V to 25 V)
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
APPLICATIONS
Reduced Unit Load for Up to 256 Nodes
Designed for RS-485 and RS-422 Networks
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 'HVD1793,
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.
For similar features with 3.3 V supply operation, see the SN65HVD1781 (SLLS877).
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
Full
1 Mbps
Up to 256
150 m
SN65HVD1793
Full
10 Mbps
Up to 64
50 m
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 © 2008–2010, 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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