SLLS552F December   2002  – November 2016 SN65HVD20 , SN65HVD21 , SN65HVD22 , SN65HVD23 , SN65HVD24

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Device Options
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  ESD Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Driver Electrical Characteristics
    6. 8.6  Receiver Electrical Characteristics
    7. 8.7  Driver Switching Characteristics
    8. 8.8  Receiver Switching Characteristics
    9. 8.9  Receiver Equalization Characteristics
    10. 8.10 Power Dissipation
    11. 8.11 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
    4. 10.4 Device Functional Modes
      1. 10.4.1 Test Mode Driver Disable
      2. 10.4.2 Equivalent Input and Output Schematic Diagrams
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
        1. 11.2.2.1 Noise Considerations for Equalized Receivers
      3. 11.2.3 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Related Links
    2. 14.2 Receiving Notification of Documentation Updates
    3. 14.3 Community Resources
    4. 14.4 Trademarks
    5. 14.5 Electrostatic Discharge Caution
    6. 14.6 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Features

  • Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA-485 Requirement
  • Receiver Equalization Extends Cable Length, Signaling Rate (SN65HVD2[3,4])
  • Reduced Unit-Load for up to 256 Nodes
  • Bus I/O Protection to Over 16-kV HBM
  • Failsafe Receiver for Open-Circuit, Short-Circuit, and Idle-Bus Conditions
  • Low Standby Supply Current 1 µA (Maximum)
  • More Than 100 mV Receiver Hysteresis

Applications

  • Long Cable Solutions
    • Factory Automation
    • Security Networks
    • Building HVAC
  • Severe Electrical Environments
    • Electrical Power Inverters
    • Industrial Drives
    • Avionics

Description

The transceivers in the SN65HVD2x family offer performance far exceeding typical RS-485 devices. In addition to meeting all requirements of the TIA/EIA485-A standard. The SN65HVD2x family operates over an extended range of common-mode voltages and has features such as high ESD protection, wide receiver hysteresis, and failsafe operation. This family of devices is ideally suited for long-cable networks and other applications where the environment is too harsh for ordinary transceivers.

These devices are designed for bidirectional data transmission on multipoint twisted-pair cables. Example applications are digital motor controllers, remote sensors and terminals, industrial process control, security stations, and environmental control systems.

These devices combine a 3-state differential driver and a differential receiver that operate from a single 5-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a differential bus port that offers minimum loading to the bus. This port features an extended common-mode voltage range, making the device suitable for multipoint applications over long cable runs.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN65HVD2x SOIC (8) 4.90 mm × 3.91 mm
PDIP (8) 9.81 mm × 6.35 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

SN65HVD2x Application Space

SN65HVD20 SN65HVD21 SN65HVD22 SN65HVD23 SN65HVD24 app_space_lls552.gif

SN65HVD2x Devices Operate Over a Wider Common-Mode Voltage Range

SN65HVD20 SN65HVD21 SN65HVD22 SN65HVD23 SN65HVD24 comm_mode_v_lls552.gif