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<div id=product-guid1><a href=../index.html>首页</a> > <a href=index.html>产品中心</a> > <a href=category1-4.html>接口芯片</a> > RS485/RS422收发器</div>

<div id=width99>
<div id=product-0><h1>RS485/RS422收发器（国产替代 ・ 原厂直供 ・ 引脚兼容）</h1></div>
<div id=product-2>RS-485/RS-422收发器是工业通信领域的“差分信号桥梁”，负责在TTL/CMOS逻辑电平与RS-485/RS-422标准差分电平之间进行双向转换。与RS-232的单端传输不同，RS-485/RS-422采用差分平衡传输方式：驱动器输出一对互补信号（A和B），接收器通过检测A-B差分电压来判断逻辑状态。这一机制使噪声在两条信号线上以共模形式耦合，接收器差分输入可将其有效抵消，从而获得极强的抗共模干扰能力。RS-485与RS-422的核心差异在于网络拓扑。RS-422为单向多接收器标准，只允许一个驱动器、最多10个接收器，不支持多驱动器总线竞争，因此无需驱动器使能引脚。RS-485为多点双向标准，允许多个驱动器共享同一总线，通过DE（驱动器使能）引脚控制发送状态，最多支持32个标准负载节点。RS-485收发器可直接用于RS-422应用，但RS-422器件不能用于RS-485多点网络，原因在于其驱动器输出级的寄生二极管会在禁用状态下拉低共模范围，导致总线竞争时数据损坏。<br>深圳市鼎芯电子<a href="https://www.dxdz-ic.com/" target="_blank">集成电路</a>有限公司深耕RS-485/RS-422接口芯片领域，提供覆盖半双工与全双工、5V与3.3V平台的完整收发器产品线，引脚级兼容主流进口型号，服务于工业自动化、楼宇控制、电机驱动、智能仪表及网络通信等多元场景。<br>鼎芯电子RS-485/RS-422收发器的应用场景覆盖多个核心领域：<br>工业自动化：PLC与传感器/执行器之间的RS-485总线通信，变频器控制网络，工业现场总线（Profibus、Modbus、Interbus）。<br>智能楼宇：门禁系统、照明控制、暖通空调（HVAC）的RS-485组网，安防监控设备通信。<br>智能仪表：智能电表/水表/气表的集中抄表系统，工业称重设备、流量计的远距离数据传输。<br>电机驱动：伺服驱动器、步进电机控制器的通信接口，运动控制网络。<br>网络通信：路由器Console口、基站设备配置接口、数据采集模块通信。<br><strong>鼎芯电子RS485/RS422收发器引脚兼容主流进口型号，欢迎免费申请样品！</strong></div>
<div id=product-0><h2>RS485/RS422收发器-产品选型表</h2></div>
<div id=product-tab>
<table width="100%" border="0" cellpadding="10" cellspacing="1">
<tr>

<td  valign="top" style="background-color:#eee;"><strong>双工模式Duplex mode</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=%B0%EB%CB%AB%B9%A4&CategoryID=9&AttributeID=64#product rel="nofollow">半双工</a><br>

<a href=product-list.asp?csz=%C8%AB%CB%AB%B9%A4&CategoryID=9&AttributeID=64#product rel="nofollow">全双工</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>工作电压（Vcc）(v)</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=3%2E0V%7E5%2E5V&CategoryID=9&AttributeID=65#product rel="nofollow">3.0V~5.5V</a><br>

<a href=product-list.asp?csz=3%2E3%7E5%2E0V&CategoryID=9&AttributeID=65#product rel="nofollow">3.3~5.0V</a><br>

<a href=product-list.asp?csz=3%2D5%2E5V&CategoryID=9&AttributeID=65#product rel="nofollow">3-5.5V</a><br>

<a href=product-list.asp?csz=4%2E5%7E5%2E5V&CategoryID=9&AttributeID=65#product rel="nofollow">4.5~5.5V</a><br>

<a href=product-list.asp?csz=4%2E75%7E5%2E25V&CategoryID=9&AttributeID=65#product rel="nofollow">4.75~5.25V</a><br>

<a href=product-list.asp?csz=5V&CategoryID=9&AttributeID=65#product rel="nofollow">5V</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>传输速率(Max)(Mbps)</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=0%2E115M&CategoryID=9&AttributeID=66#product rel="nofollow">0.115M</a><br>

<a href=product-list.asp?csz=0%2E25M&CategoryID=9&AttributeID=66#product rel="nofollow">0.25M</a><br>

<a href=product-list.asp?csz=0%2E5M&CategoryID=9&AttributeID=66#product rel="nofollow">0.5M</a><br>

<a href=product-list.asp?csz=10M&CategoryID=9&AttributeID=66#product rel="nofollow">10M</a><br>

<a href=product-list.asp?csz=16M&CategoryID=9&AttributeID=66#product rel="nofollow">16M</a><br>

<a href=product-list.asp?csz=2%2E5M&CategoryID=9&AttributeID=66#product rel="nofollow">2.5M</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>节点数量</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=128&CategoryID=9&AttributeID=67#product rel="nofollow">128</a><br>

<a href=product-list.asp?csz=256&CategoryID=9&AttributeID=67#product rel="nofollow">256</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>工作温度 Operation Temperature Range(℃)</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=0%2D70%A1%E6&CategoryID=9&AttributeID=68#product rel="nofollow">0-70℃</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>封装</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=DIP%2D14+SOP%2D14&CategoryID=9&AttributeID=69#product rel="nofollow">DIP-14 SOP-14</a><br>

<a href=product-list.asp?csz=DIP%2D8+SOP%2D8&CategoryID=9&AttributeID=69#product rel="nofollow">DIP-8 SOP-8</a><br>
</div>
</td>

<td  valign="top" style="background-color:#eee;"><strong>替代</strong><div style="max-height:300px; overflow-y:auto; overflow-x:hidden;">

<a href=product-list.asp?csz=MAX3082&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3082</a><br>

<a href=product-list.asp?csz=MAX3085+SP3085&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3085 SP3085</a><br>

<a href=product-list.asp?csz=MAX3088&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3088</a><br>

<a href=product-list.asp?csz=MAX3485+SP3485+MAX485+SP485&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3485 SP3485 MAX485 SP485</a><br>

<a href=product-list.asp?csz=MAX3490&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3490</a><br>

<a href=product-list.asp?csz=MAX3491&CategoryID=9&AttributeID=70#product rel="nofollow">MAX3491</a><br>

<a href=product-list.asp?csz=MAX481+SP481&CategoryID=9&AttributeID=70#product rel="nofollow">MAX481 SP481</a><br>

<a href=product-list.asp?csz=MAX483+SP483&CategoryID=9&AttributeID=70#product rel="nofollow">MAX483 SP483</a><br>

<a href=product-list.asp?csz=MAX487+SP487&CategoryID=9&AttributeID=70#product rel="nofollow">MAX487 SP487</a><br>

<a href=product-list.asp?csz=MAX488+SP488&CategoryID=9&AttributeID=70#product rel="nofollow">MAX488 SP488</a><br>

<a href=product-list.asp?csz=MAX489+SP489&CategoryID=9&AttributeID=70#product rel="nofollow">MAX489 SP489</a><br>

<a href=product-list.asp?csz=MAX490+SP490&CategoryID=9&AttributeID=70#product rel="nofollow">MAX490 SP490</a><br>

<a href=product-list.asp?csz=MAX491+SP491&CategoryID=9&AttributeID=70#product rel="nofollow">MAX491 SP491</a><br>

<a href=product-list.asp?csz=SN65176+DS65176&CategoryID=9&AttributeID=70#product rel="nofollow">SN65176 DS65176</a><br>

<a href=product-list.asp?csz=SN65LBC184&CategoryID=9&AttributeID=70#product rel="nofollow">SN65LBC184</a><br>

<a href=product-list.asp?csz=SN75176&CategoryID=9&AttributeID=70#product rel="nofollow">SN75176</a><br>

<a href=product-list.asp?csz=SN75LBC184&CategoryID=9&AttributeID=70#product rel="nofollow">SN75LBC184</a><br>

<a href=product-list.asp?csz=SP485+ST485+HG485&CategoryID=9&AttributeID=70#product rel="nofollow">SP485 ST485 HG485</a><br>
</div>
</td>

  </tr>
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<div id=width1280></div>
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<table width="100%" border="0" cellpadding="10" cellspacing="1">
  <tr><td align="center" valign="top" bgcolor="#ffb027"><strong>图片</strong></td>
  <td align="center" valign="top" bgcolor="#ffb027"><strong>型号</strong></td>

<td align="center" bgcolor="#ffb027"><strong>双工模式Duplex mode</strong></td>

<td align="center" bgcolor="#ffb027"><strong>工作电压（Vcc）(v)</strong></td>

<td align="center" bgcolor="#ffb027"><strong>传输速率(Max)(Mbps)</strong></td>

<td align="center" bgcolor="#ffb027"><strong>节点数量</strong></td>

<td align="center" bgcolor="#ffb027"><strong>工作温度 Operation Temperature Range(℃)</strong></td>

<td align="center" bgcolor="#ffb027"><strong>封装</strong></td>

<td align="center" bgcolor="#ffb027"><strong>替代</strong></td>

  </tr>
<tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71747540.jpg width=60 alt="MAX481RS485/RS422收发器" title="MAX481RS485/RS422收发器"></td>
<td><strong><a href="MAX481.html" target="_blank" style="color:#F60">MAX481</a></strong></td>

<td>全双工</td>

<td>5V</td>

<td>0.115M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX481 SP481</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71746310.jpg width=60 alt="MAX483RS485/RS422收发器" title="MAX483RS485/RS422收发器"></td>
<td><strong><a href="MAX483.html" target="_blank" style="color:#F60">MAX483</a></strong></td>

<td>半双工</td>

<td>5V</td>

<td>0.115M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX483 SP483</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71745110.jpg width=60 alt="MAX485RS485/RS422收发器" title="MAX485RS485/RS422收发器"></td>
<td><strong><a href="MAX485.html" target="_blank" style="color:#F60">MAX485</a></strong></td>

<td>半双工</td>

<td>3-5.5V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>SP485 ST485 HG485</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/7174440.jpg width=60 alt="MAX487RS485/RS422收发器" title="MAX487RS485/RS422收发器"></td>
<td><strong><a href="MAX487.html" target="_blank" style="color:#F60">MAX487</a></strong></td>

<td>半双工</td>

<td>5V</td>

<td>0.25M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX487 SP487</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71742590.jpg width=60 alt="MAX488RS485/RS422收发器" title="MAX488RS485/RS422收发器"></td>
<td><strong><a href="MAX488.html" target="_blank" style="color:#F60">MAX488</a></strong></td>

<td>全双工</td>

<td>5V</td>

<td>0.25M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX488 SP488</td>

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<td><img src=../images/upfiles/71741440.jpg width=60 alt="MAX489RS485/RS422收发器" title="MAX489RS485/RS422收发器"></td>
<td><strong><a href="MAX489.html" target="_blank" style="color:#F60">MAX489</a></strong></td>

<td>全双工</td>

<td>5V</td>

<td>0.25M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-14 SOP-14</td>

<td>MAX489 SP489</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71740200.jpg width=60 alt="MAX490RS485/RS422收发器" title="MAX490RS485/RS422收发器"></td>
<td><strong><a href="MAX490.html" target="_blank" style="color:#F60">MAX490</a></strong></td>

<td>全双工</td>

<td>5V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX490 SP490</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71738590.jpg width=60 alt="MAX491RS485/RS422收发器" title="MAX491RS485/RS422收发器"></td>
<td><strong><a href="MAX491.html" target="_blank" style="color:#F60">MAX491</a></strong></td>

<td>全双工</td>

<td>5V</td>

<td>0.25M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-14 SOP-14</td>

<td>MAX491 SP491</td>

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<td><strong><a href="MAX3082E.html" target="_blank" style="color:#F60">MAX3082E</a></strong></td>

<td>半双工</td>

<td>4.5~5.5V</td>

<td>0.115M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX3082</td>

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<td><img src=../images/upfiles/71736240.jpg width=60 alt="MAX3085ERS485/RS422收发器" title="MAX3085ERS485/RS422收发器"></td>
<td><strong><a href="MAX3085E.html" target="_blank" style="color:#F60">MAX3085E</a></strong></td>

<td>半双工</td>

<td>5V</td>

<td>0.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX3085 SP3085</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71734580.jpg width=60 alt="MAX3088ERS485/RS422收发器" title="MAX3088ERS485/RS422收发器"></td>
<td><strong><a href="MAX3088E.html" target="_blank" style="color:#F60">MAX3088E</a></strong></td>

<td>半双工</td>

<td>4.5~5.5V</td>

<td>16M</td>

<td>256</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX3088</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/7173370.jpg width=60 alt="MAX3485ERS485/RS422收发器" title="MAX3485ERS485/RS422收发器"></td>
<td><strong><a href="MAX3485E.html" target="_blank" style="color:#F60">MAX3485E</a></strong></td>

<td>半双工</td>

<td>3.0V~5.5V</td>

<td>10M</td>

<td>256</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX3485 SP3485 MAX485 SP485</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/7173200.jpg width=60 alt="MAX3490ERS485/RS422收发器" title="MAX3490ERS485/RS422收发器"></td>
<td><strong><a href="MAX3490E.html" target="_blank" style="color:#F60">MAX3490E</a></strong></td>

<td>全双工</td>

<td>3.3~5.0V</td>

<td>10M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>MAX3490</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71730470.jpg width=60 alt="MAX3491ERS485/RS422收发器" title="MAX3491ERS485/RS422收发器"></td>
<td><strong><a href="MAX3491E.html" target="_blank" style="color:#F60">MAX3491E</a></strong></td>

<td>全双工</td>

<td>3.3~5.0V</td>

<td>10M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-14 SOP-14</td>

<td>MAX3491</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71728320.jpg width=60 alt="SN65176RS485/RS422收发器" title="SN65176RS485/RS422收发器"></td>
<td><strong><a href="SN65176.html" target="_blank" style="color:#F60">SN65176</a></strong></td>

<td>半双工</td>

<td>4.5~5.5V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>SN65176 DS65176</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71725540.jpg width=60 alt="SN75176RS485/RS422收发器" title="SN75176RS485/RS422收发器"></td>
<td><strong><a href="SN75176.html" target="_blank" style="color:#F60">SN75176</a></strong></td>

<td>半双工</td>

<td>4.5~5.5V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>SN75176</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/7172470.jpg width=60 alt="SN65LBC184RS485/RS422收发器" title="SN65LBC184RS485/RS422收发器"></td>
<td><strong><a href="SN65LBC184.html" target="_blank" style="color:#F60">SN65LBC184</a></strong></td>

<td>半双工</td>

<td>4.75~5.25V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>SN65LBC184</td>

</tr><tr bgcolor="#f5f5f5" align="center">
<td><img src=../images/upfiles/71721170.jpg width=60 alt="N75LBC184RS485/RS422收发器" title="N75LBC184RS485/RS422收发器"></td>
<td><strong><a href="N75LBC184.html" target="_blank" style="color:#F60">N75LBC184</a></strong></td>

<td>半双工</td>

<td>4.75~5.25V</td>

<td>2.5M</td>

<td>128</td>

<td>0-70℃</td>

<td>DIP-8 SOP-8</td>

<td>SN75LBC184</td>

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