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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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

SN65HVD1780-Q1, SN65HVD1781-Q1, SN65HVD1782-Q1

SLLSE49B – SEPTEMBER 2010 – REVISED JANUARY 2016

SN65HVD178x-Q1 Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation

1

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 ('HVD1780-Q1, 'HVD1781-Q1)

–

> ±30 V ('HVD1782-Q1)

•

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

–

•

Pin-Compatible With Industry-Standard SN75176

•

Signaling Rates of 115 kbps, 1 Mbps, and up to

10 Mbps

2 Applications

Automotive Data Links

3 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.

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.

Device Information(1)

PART NUMBER

SIGNALING RATE

NUMBER OF

NODES

SN65HVD1780-Q1

Up to 115 kbps

Up to 320

SN65HVD1781-Q1

Up to 1 Mbps

Up to 320

SN65HVD1782-Q1

Up to 10 Mbps

Up to 64

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic