Datasheet

V upto70V
FAULT
M0092-02
SN65HVD1780
SN65HVD1781
SN65HVD1782
www.ti.com
SLLS877F DECEMBER 2007REVISED FEBRUARY 2010
Fault-Protected RS-485 Transceivers with 3.3-V to 5-V Operation
Check for Samples: SN65HVD1780, SN65HVD1781, SN65HVD1782
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FEATURES
These devices combine a differential driver and a
Bus-Pin Fault Protection to:
differential receiver, which operate from a single
> ±70 V ('HVD1780, 81)
power supply. In the 'HVD1782, the driver differential
> ±30 V ('HVD1782)
outputs and the receiver differential inputs are
connected internally to form a bus port suitable for
Operation With 3.3-V to 5-V Supply Range
half-duplex (two-wire bus) communication. This port
±16 kV HBM Protection on Bus Pins
features a wide common-mode voltage range, making
Reduced Unit Load for up to 320 Nodes
the devices suitable for multipoint applications over
Failsafe Receiver for Open-Circuit,
long cable runs. These devices are characterized
from –40°C to 125°C. These devices are
Short-Circuit and Idle-Bus Conditions
pin-compatible with the industry-standard SN75176
Low Power Consumption
transceiver, making them drop-in upgrades in most
Low Standby Supply Current, 1 mA Max
systems.
I
CC
4 mA Quiescent During Operation
These devices are fully compliant with ANSI TIA/EIA
Pin-Compatible With Industry-Standard
485-A with a 5-V supply and can operate with a 3.3-V
SN75176
supply with reduced driver output voltage for
low-power applications. For applications where
Signaling Rates of 115 kbps, 1 Mbps, and up
operation is required over an extended
to 10 Mbps
common-mode voltage range, see the
SN65HVD1785 (SLLS872) data sheet.
APPLICATIONS
HVAC Networks
Security Electronics
Building Automation
Telecomm Equipment
Motion Control
Industrial 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 the
human-body-model specification.
Transceiver Signaling Rate Number of Nodes
HVD1780 Up to 115 kbps Up to 320
HVD1781 Up to 1 Mbps Up to 320
HVD1782 Up to 10 Mbps Up to 64
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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 © 2007–2010, 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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