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Product details

Parameters

Number of transmitters 1 Number of receivers 1 Duplex Half Supply voltage (Nom) (V) 5 Signaling rate (Max) (Mbps) 3 IEC 61000-4-2 contact (+/- kV) Isolated No Fault protection (V) -27 to 27 Number of nodes 256 Common mode range -20 to 25 ICC (Max) (mA) 14 Features Extended common mode Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other RS-485 & RS-422 transceivers

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other RS-485 & RS-422 transceivers

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

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Description

The transceivers in the SN65HVD2x family offer performance far exceeding typical RS-485 devices. In addition to meeting all requirements of the TIA/EIA-485-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.

The SN65HVD20 device provides high signaling rate (up to 25 Mbps) for interconnecting networks of up to 64 nodes.

The SN65HVD21 device allows up to 256 connected nodes at moderate data rates (up to 5 Mbps). The driver output slew rate is controlled to provide reliable switching with shaped transitions which reduce high-frequency noise emissions.

The SN65HVD22 device has controlled driver output slew rate for low radiated noise in emission-sensitive applications and for improved signal quality with long stubs. Up to 256 SN65HVD22 nodes can be connected at signaling rates up to 500 kbps.

The SN65HVD23 device implements receiver equalization technology for improved jitter performance on differential bus applications with data rates up to 25 Mbps at cable lengths up to 160 meters.

The SN65HVD24 device implements receiver equalization technology for improved jitter performance on differential bus applications with data rates from 1 Mbps to 10 Mbps at cable lengths up to 1000 meters.

The receivers include a failsafe circuit that provides a high-level output within 250 microseconds after loss of the input signal. The most common causes of signal loss are disconnected cables, shorted lines, or the absence of any active transmitters on the bus. This feature prevents noise from being received as valid data under these fault conditions. This feature may be used for Wired-OR bus signaling.

The SN65HVD2x devices are characterized for operation temperatures from –40°C to 85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet SN65HVD2x Extended Common-Mode RS-485 Transceivers datasheet (Rev. F) Nov. 18, 2016
Technical articles The secret to extending RS-485 communication performance Jul. 24, 2015
User guides RS-485 Half-Duplex EVM User's Guide (Rev. B) Jun. 12, 2013
Application notes Use Receiver Equalization to Extend RS-485 Data Communications* Jul. 06, 2004
Application notes The RS-485 Unit Load and Maximum Number of Bus Connections Mar. 15, 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
The RS-485 half-duplex evaluation module (EVM) helps designers evaluate device performance, supporting fast development and analysis of data-transmission systems using any of the SN65HVD1x, SN65HVD2x, SN65HVD7x, SN65HVD8x and SN65HVD96 half-duplex transceivers. The EVM board comes without the RS-485 (...)
Features

The EVM lets you quickly, easily and accurately evaluate TI's family of RS-485 products.

Hardware:
  • RS-485 half-duplex EVM PWB
  • Screw-type SMA jacks and Bergstik headers serve as the I/O connections
  • Banana jacks serve as the DC power input terminals
EVALUATION BOARDS Download
document-generic User guide
49
Description

The SN65HVD22EVM evaluation module (EVM) helps you develop and analyze data transmission systems using our SN65HVD2x family of devices. This series of devices, including the SN65HVD20, SN65HVD21, SN65HVD22, SN65HVD23 and SN65HVD24, complies with TIA/EIA-485. These devices also use the (...)

Features
  • Hardware: SN65HVD22 EVM PWB
  • Screw-type SMA jacks and Bergstik headers serve as the I/O connections
  • Banana jacks serve as the DC power input terminals

Design tools & simulation

SIMULATION MODELS Download
SLLC159A.ZIP (8 KB) - IBIS Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
Half-Duplex, Non-Isolated RS-485 BoosterPack Reference Design
TIDA-00214 The Half-Duplex, Non-Isolated RS-485 BoosterPack allows for easy evaluation of TI’s RS-485 transceivers for applications such as building management systems (BMS), factory automation, building automation, and HVAC. The BoosterPack is designed and tested to support data rates up to 1.25 Mbps (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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