SN65HVD1781A-Q1 Datasheet, PDF (1/23 Pages) Texas Instruments – Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation

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SN65HVD1781A-Q1
SLLSF08 – MAY 2017
SN65HVD1781A-Q1 Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results
– Device Temperature Grade 1:
–40°C to 125°C Ambient Operating
Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESG Classification Level C3B
• Bus-Pin Fault Protection to: > ±70 V
• 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 μA Maximum
– I_CC 4-mA Quiescent During Operation
• Pin-Compatible With Industry-Standard SN75176
• Signaling Rates up to 1 Mbps
2 Applications
• Infotainment / Clusters
• HMI and Displays
• Media Interface
• Head Unit
3 Description
The device is designed to survive overvoltage faults
such as direct shorts to power supplies, mis-wiring
faults, connector failures, cable crushes, and tool mis-
applications. It is also robust to ESD events, with high
levels of protection to the human-body-model
specification.
The SN65HVD1781A-Q1 combines a differential
driver and a differential receiver, which operate from
a single power supply. 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
device suitable for multipoint applications over long
cable runs. The device is characterized from –40°C to
125°C. The SN65HVD1781A-Q1 device is pin-
compatible with the industry-standard SN75176
transceiver, making it a drop-in upgrade in most
systems.
The device is 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN65HVD1781A-Q1 SOIC
4.90 mm x 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
V_FAULT up to 70 V
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.