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参数

Supply voltage(s) (Nom) (V) 5 Number of TX 1 Number of RX 1 Duplex Half Signaling rate (Max) (Mbps) 3 IEC 61000-4-2 contact (+/- kV) HBM ESD (kV) 16 Fault protection (V) -27 to 27 Number of nodes 256 Common mode range -20 to 25 ICC (Max) (mA) 14 Features Extended common mode Isolated No Rating Catalog Operating temperature range (C) -40 to 85 Approx. price (US$) 1.58 | 1ku open-in-new 查找其它 RS-485 和 RS-422 收发器

封装|引脚|尺寸

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new 查找其它 RS-485 和 RS-422 收发器

特性

  • 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

All other trademarks are the property of their respective owners

open-in-new 查找其它 RS-485 和 RS-422 收发器

描述

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.

open-in-new 查找其它 RS-485 和 RS-422 收发器
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技术文档

= 特色
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类型 标题 下载最新的英文版本 发布
* 数据表 SN65HVD2x Extended Common-Mode RS-485 Transceivers 数据表 2016年 11月 18日
技术文章 Small doesn’t mean you compromise performance when implementing signal isolation 2017年 5月 25日
技术文章 The secret to extending RS-485 communication performance 2015年 7月 24日
技术文章 Upgrading the standard: a better way to drive peripherals 2014年 6月 20日
技术文章 How Thunderbolt™ 2 enables 4k video resolution 2014年 4月 3日
用户指南 RS-485 半双工评估模块 (Rev. A) 下载最新的英文版本 (Rev.B) 2013年 3月 7日
应用手册 Use Receiver Equalization to Extend RS-485 Data Communcations* 2004年 7月 6日
应用手册 The RS-485 Unit Load and Maximum Number of Bus Connections 2004年 3月 15日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
RS-485 半双工评估模块
RS485-HF-DPLX-EVM
document-generic 用户指南 document-generic 下载最新的英文版本 (Rev.B)
$49.00
说明
RS485 半双工 EVM 可帮助设计人员评估器件性能,支持快速开发和分析采用 SN65HVD1X、SN65HVD2X、SN65HVD7X、SN65HVD8X 或 SN65HVD96 收发器的数据传输系统。此 EVM 板没有焊接到板上的 RS-485 器件。用户可以申请样片或购买任意一种 TI RS-485 半双工器件进行评估。请参见 EVM 用户指南(TI 文献编号 SLLU173)获取完整的兼容器件列表。
特性

此 EVM 可对 TI RS-485 产品系列进行快速、轻松且准确的评估。

硬件:
  • RS485 半双工 EVM PWB
  • 螺旋式 SMA 插孔和 Bergstik 头用作 I/O 连接
  • 香蕉插孔用作直流电源输入终端
评估板 下载
document-generic 用户指南
$49.00
说明

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 (...)

特性
  • 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

设计工具和仿真

仿真模型 下载
SLLC159A.ZIP (8 KB) - IBIS Model
仿真工具 下载
document-generic 用户指南 document-generic 下载英文版本 (Rev.A)

参考设计

参考设计 下载
半双工非隔离式 RS-485 BoosterPack 参考设计
TIDA-00214 半双工、非隔离式 RS-485 BoosterPack 可以轻松评估 TI 面向楼宇管理系统 (BMS)、工厂自动化、楼宇自动化和 HVAC 等应用的 RS-485 收发器。经过测试的 BoosterPack 用于支持最高 1.25 Mbps 的数据速率、最大 1000 英尺的电缆长度以及总共 32 个节点。组装型扩展共模 RS-485 收发器可以轻松移除并用任何 TI 半双工 8 引脚 SOIC RS-485 收发器替换。系统设计人员因此可以根据不同的性能目标评估多种不同的收发器。RS-485 BoosterPack 与 20 引脚和 40 引脚 TI LaunchPad 兼容。
document-generic 原理图 document-generic 用户指南

CAD/CAE 符号

封装 引脚 下载
SOIC (D) 8 视图选项

订购与质量

支持与培训

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