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Product SN65HVD78D is a 3.3 V Half-Duplex RS-485 with IEC ESD and supports speeds of up to 50 Mbps

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Service & Packaging

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

Confirm the return or exchange with our staff.

Maintain the goods in their original condition as received.

Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]

About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.



Tape and Reel

Tape and Reel

Cut Tape

Cut Tape

Tube or Tray

Tube or Tray

SN65HVD78D DataSheet


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Quick Inquiry

Please submit RFQ for SN65HVD78D or email to us: Email: [email protected], we will contact you in 12 hours.


With a single 3.3-V power supply, the SN65HVD78D combines a differential driver and receiver, making it suitable for half-duplex communication in applications requiring two-wire bus systems. The wide common-mode voltage range further enhances its suitability for multi-point applications over long cable runs. This versatility makes the device well-suited for a range of industrial settings and ensures its performance even in challenging conditions

Key Features

  • High-speed CAN transceiver
  • Compliant with ISO11898-2/5 standards
  • Extended ±36-V common-mode range
  • Low standby current consumption
  • Thermal shutdown and short-circuit protection
  • Controlled driver output transition times for improving signal quality
  • Suitable for high-speed automotive and industrial applications
  • Application

  • The SN65HVD78D is commonly used in industrial automation, automotive systems, sensor interfacing, and data communication applications
  • It is specifically designed for use in RS-485 and RS-422 communication networks, where high-speed data transmission and noise immunity are required
  • Specifications

    The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

    Number of receivers 1 Number of transmitters 1
    Duplex Half Supply voltage (nom) (V) 3.3
    Signaling rate (max) (MBits) 50 IEC 61000-4-2 contact (±V) 12000
    Fault protection (V) -13 to 16.5 Common-mode range (V) -7 to 12
    Number of nodes 200 Features IEC ESD protection
    Isolated No Supply current (max) (µA) 950
    Rating Catalog Operating temperature range (°C) -40 to 125

    Specification Comparison

    Datasheet PDF

    Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

    Preliminary Specification SN65HVD78D PDF Download


    What is SN65HVD78D?

    The SN65HVD78D is a robust RS-485 transceiver designed by Texas Instruments. It is specifically tailored for high-speed communication in industrial applications, providing a reliable and noise-immune interface for data transmission over long cable distances.

    How Does SN65HVD78D Work?

    The SN65HVD78D functions as a transceiver for RS-485 communication, facilitating bidirectional data transfer between nodes in a network. It features enhanced electrostatic discharge (ESD) protection and can operate over a wide voltage range, making it suitable for industrial environments where signal integrity and reliability are crucial.

    How Many Pins does SN65HVD78D have and What are the Functions of the Pinout Configuration?

    The SN65HVD78D is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

    • RO: Receiver output pin.
    • RE: Receiver enable control pin.
    • GND: Ground pin.
    • A, B: Differential communication pins.
    • VCC1: Positive power supply pin for driver.
    • VCC2: Positive power supply pin for receiver.
    • DE: Driver output enable control pin.

    What are the Pros and Cons of SN65HVD78D?


    • Industrial Strength: Designed for reliable communication in harsh industrial environments.
    • ESD Protection: Features enhanced ESD protection for improved reliability.
    • Wide Voltage Range: Supports a wide voltage range for versatility in different systems.
    • Robust Communication: Ensures noise-immune and high-speed data transmission over long distances.
    • Compact Size: Housed in a compact 8-pin package for space-efficient designs.


    • Complexity: RS-485 communication may require careful consideration of termination and network configuration.
    • Power Consumption: May consume more power compared to lower-speed communication interfaces.
    • External Components: Some applications may require additional components for specific functions such as termination resistors.

    Are There Any Equivalents/Alternatives to SN65HVD78D for Recommendation?

    • The MAX485 from Maxim Integrated is a popular alternative RS-485 transceiver.
    • Alternatives to the SN65HVD78D include the LTC490 and LTC485 from Linear Technology.

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