Parts SN65HVD1782DR

TISN65HVD1782DR

Name: SN65HVD1782DR
Brand: Texas Instruments

Texas Instruments

TI 3.3 V RS-485 transceiver family known for robust ESD and bus-fault protection options across multiple packages.

NRND11,673 in stock

Datasheet Digi-Key Mouser Compare Prices

Overview

The SN65HVD1782DR is a robust 3.3 V to 5 V half-duplex RS-485 transceiver designed for industrial communication networks. It features high bus-pin fault protection up to +/-30 V and high ESD immunity, making it suitable for harsh electrical environments where overvoltage conditions may occur. This transceiver supports data rates up to 10 Mbps and is pin-compatible with industry-standard SN75176 devices.

Why Choose This Part

This transceiver provides exceptional reliability with +/-16-kV HBM ESD protection and integrated failsafe circuitry for open, shorted, or idle bus conditions. Its wide supply range of 3.15 V to 5.5 V allows for seamless integration into both legacy 5 V and modern 3.3 V logic systems without sacrificing performance.

Applications

Industrial Automation

Ideal for Modbus, Profibus, and other fieldbus protocols in factory automation systems where robust fault protection is required.

HVAC Systems

Reliable long-distance communication for building automation networks, including climate control and security systems.

Grid Infrastructure

Used in smart meters and substation equipment where the transceiver must withstand significant electrical transients.

Multi-Node Networks

The reduced unit load allows for up to 320 nodes on a single bus, maximizing network scalability.

Key Specifications

Type Transceiver

Duplex Half

Protocol RS422, RS485

Data Rate 10Mbps

Mounting Type Surface Mount

Package / Case 8-SOIC (0.154", 3.90mm Width)

Voltage - Supply 3.15V ~ 5.5V

Receiver Hysteresis 50 mV

Operating Temperature -40degC ~ 125degC

Supplier Device Package 8-SOIC

Number of Drivers/Receivers 1/1

Getting Started

For evaluation, utilize the TI SN65HVD178x evaluation modules to test bus fault conditions. When designing the PCB, place a 0.1 uF ceramic bypass capacitor close to the VCC pin and ensure the RS-485 differential pairs are routed with controlled impedance. Standard UART-to-RS485 firmware logic applies as this device is pin-compatible with traditional transceivers.