SN65HVD1781-Q1 Datasheet, PDF (1/18 Pages) Texas Instruments – Fault-Protected RS-485 Transceivers with 3.3-V to 5-V Operation

SN65HVD1780-Q1, SN65HVD1781-Q1, SN65HVD1782 -Q1
www.ti.com
SLLSE49 – SEPTEMBER 2010
Fault-Protected RS-485 Transceivers with 3.3-V to 5-V Operation
Check for Samples: SN65HVD1780-Q1, SN65HVD1781-Q1, SN65HVD1782 -Q1
FEATURES
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• Qualified for Automotive Applications
• Bus-Pin Fault Protection to:
– > ±70 V ('HVD1780, 81)
– > ±30 V ('HVD1782)
• Operation With 3.3-V to 5-V Supply Range
• ±16 kV HBM Protection on Bus Pins
• Reduced Unit Load for up to 320 Nodes
• Failsafe Receiver for Open-Circuit,
Short-Circuit and Idle-Bus Conditions
• Low Power Consumption
– Low Standby Supply Current, 1 mA Max
– I_CC 4 mA Quiescent During Operation
• Pin-Compatible With Industry-Standard
SN75176
• Signaling Rates of 115 kbps, 1 Mbps, and up
to 10 Mbps
These devices combine a differential driver and a
differential receiver, which operate from a single
power supply. In the 'HVD1782, 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. This port
features 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 125°C. These devices are
pin-compatible with the industry-standard SN75176
transceiver, making them drop-in upgrades in most
systems.
These devices are fully compliant with ANSI TIA/EIA
485-A with a 5-V supply and can operate with a 3.3-V
supply with reduced driver output voltage for
low-power applications. For applications where
operation is required over an extended
common-mode voltage range, see the
SN65HVD1785 (SLLS872) data sheet.
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
HVD1780
HVD1781
HVD1782
V_FAULT up to 70 V
M0092-02
Signaling Rate
Up to 115 kbps
Up to 1 Mbps
Up to 10 Mbps
Number of Nodes
Up to 320
Up to 320
Up to 64
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UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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