Texas Instruments

SN65HVD1781DR

Interface ICs

Manufacturer
MPN
SN65HVD1781DR
Package / Case
SOIC-8
Key Attributes
Fault-Protected RS-485 Transceivers With 3.3-V to 5-V Operation

Technical Specifications

TypeDescription
Data Rate1 Mbps
Quiescent Current6 mA
Nodes320
ESD Protect±16kV
Communication ModeHalf-Duplex
Number of Drivers1
TypeDescription
Number of Receivers1
TypeTransceiver
Supply Voltage3.15V~5.5V
Operating Temperature-40°C~+125°C
FeaturesTx/Rx enable;Enable shutdown;Fail-safe;Hot-swap protection;Low-power mode
Package / CaseSOIC-8

Product Introduction

The SN65HVD178x 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. The devices are also robust to ESD events with high levels of protection to the human- body- model specification.

The SN65HVD178x devices combine a differential driver and a differential receiver, which operate from a single power supply. In the SN65HVD1782, 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℃ to 125℃. 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.

Features

  • Bus- Pin Fault Protection to: > ±70 V (SN65HVD1780, SN65HVD1781); > ±30 V (SN65HVD1782)
  • 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
  • Icc 4- mA Quiescent Current During Operation
  • Pin- Compatible With Industry- Standard SN75176
  • Signaling Rates of 115 kbps, 1 Mbps, and up to 10 Mbps
  • Create a Custom Design using the SN65HVD178x with the WEBENCH Power Designer

Applications

  • HVAC Networks
  • Security Electronics
  • Building Automation
  • Telecommunication Equipment
  • Motion Control
  • Industrial Networks

Datasheet

📄 Open Download

Alternative Parts

Common SN65HVD1781DR alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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