RS-485 / RS-422

以高数据速率或者进行长距离通信时，差分数据传输的表现优于大部分应用。差分信号有助于消除地偏移和感应噪声信号效应，其在网络内可表现为共模电压。RS-485规范符合真正多点通信网络的要求，根据该标准，单个（双线）总线上最多可以连接32个驱动器和32个接收器。部分RS-485收发器改变输入阻抗以允许多8倍的节点连接至同一总线。最常用的RS-485应用为工业环境下的可编程逻辑控制器间通信。其他常见用途有商店POS终端机和远程仪表。ADI公司提供各种不同的标准RS-485/RS-422收发器和iCoupler® 隔离式RS-485/RS-422收发器，以适应许多不同应用。

有用的新工具 -ADI RS-485/RS-422交叉选型指南

有关ADI公司接口和隔离产品的问题， 请访问中文技术论坛的接口与隔离支持社区。

Circuit from the lab 已完成设计、测试，可供立即集成

产品选型表

  • 安全和法规认证

  • iCoupler®系列数字隔离产品均经过安全测试（基本测试和强化测试），并通过多家监管机构认证。查看 合规性信息。

  • RS-485 新闻
EngineerZone

Isolated RS-485

Part# 中文数据手册Insulation Rating (kVrms)ESD Protection VDataRate RS-485Pwr Supply (Vnom)Integrated isoPowerIntegrated Transformer Dr# of Nodes On BusShutdown/DisableDriver/Receiver EnableFail SafeUS Price 1000-4999Protocols
ADM2682E✓
  		5KV rms15 kV16Mbps+3.3, +5Yes-256-YesOpen, Short $7.5Isolated RS-485, RS-422, RS-485
ADM2687E✓
  		5KV rms15 kV500Kbps+3.3, +5Yes-256-YesOpen, Short $6.5Isolated RS-485, RS-422, RS-485
ADM2481  2.5KV rms---500Kbps+3 to +5 & ISO +5----256NoYesOpen, Short $3.04Isolated RS-485
ADM2582E✓
  		2.5KV rms15 kV16Mbps+3.3, +5YesYes256NoYesOpen, Short $6.5Isolated RS-485, RS-422, RS-485
ADM2587E✓
  		2.5KV rms15 kV500Kbps+3.3, +5YesYes256NoYesOpen, Short $5.5Isolated RS-485, RS-422, RS-485
ADM2482E  2.5KV rms15 kV16Mbps+3 to +5 & ISO +3-Yes256NoYesOpen, Short $4.66Isolated RS-485
ADM2484E  5KV rms15 kV500Kbps+3 to +5 & ISO +3----256NoYesOpen, Short $3.04Isolated RS-485, RS-422, RS-485
ADM2487E  2.5KV rms15 kV500Kbps+3 to +5 & ISO +3-Yes256NoYesOpen, Short $3.64Isolated RS-485
ADM2491E  5KV rms8 kV16Mbps+3 to +5 & ISO +5----32NoYesOpen $4.76Isolated RS-485, RS-422
ADM2485Reference Circuit Available  2.5KV rms---16Mbps+3 to +5 & ISO +5-Yes50NoYesOpen $5.57Isolated RS-485
ADM2490E  5KV rms8 kV16Mbps+3 to +5 & ISO +5----32NoNoOpen $4.55Isolated RS-485, RS-422
ADM2483  2.5KV rms---500Kbps+3 to +5 & ISO +5----256NoYesOpen, Short $3.04Isolated RS-485
ADM2486  2.5KV rms---20Mbps+3 to +5 & ISO +5----50NoYesOpen $5.04Isolated RS-485
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Interface RS-485

Part# 中文数据手册Pwr Supply (Vnom)DataRate RS-485Data Rate RS-422# of Nodes On BusAutomotive QualifiedUS Price 1000-4999Full or Half DuplexDriver/Receiver EnableFail SafeESD Protection V
ADM1485  +530Mbps30Mbps32- $1.63HalfYesOpen---
ADM1486  +530Mbps30Mbps50- $2.07HalfYesOpen---
ADM1487E  +52.5Mbps2.5Mbps128- $1.32HalfYesOpen15 kV
ADM1490E  +516Mbps16Mbps32- $1.15FullNoOpen8 kV
ADM1491E  +516Mbps16Mbps32- $1.15FullYesOpen8 kV
ADM2481  +3 to +5 & ISO +5500Kbps500Kbps256- $3.04HalfYesOpen, Short---
ADM2482E  +3 to +5 & ISO +316Mbps16Mbps256- $4.66FullYesOpen, Short15 kV
ADM2484E  +3 to +5 & ISO +3500Kbps500Kbps256- $3.04FullYesOpen, Short15 kV
ADM2485Reference Circuit Available  +3 to +5 & ISO +516Mbps16Mbps50- $5.57HalfYesOpen---
ADM2487E  +3 to +5 & ISO +3500Kbps500Kbps256- $3.64FullYesOpen, Short15 kV
ADM2490E  +3 to +5 & ISO +516Mbps16Mbps32- $4.55FullNoOpen8 kV
ADM2491E  +3 to +5 & ISO +516Mbps16Mbps32- $4.76FullYesOpen8 kV
ADM2582E✓
  		+3.3, +516Mbps16Mbps256- $6.5FullYesOpen, Short15 kV
ADM2587E✓
  		+3.3, +5500Kbps500Kbps256- $5.5FullYesOpen, Short15 kV
ADM3070E  +3.3250Kbps250Kbps256- $1.62FullYesOpen, Short15 kV
ADM3071E  +3.3250Kbps250Kbps256- $1.57FullNoOpen, Short15 kV
ADM3072E  +3.3250Kbps250Kbps256- $1.52HalfYesOpen, Short15 kV
ADM3073E  +3.3500Kbps500Kbps256- $1.62HalfYesOpen, Short15 kV
ADM3074E  +3.3500Kbps500Kbps256- $1.51FullNoOpen, Short15 kV
ADM3075E  +3.3500Kbps500Kbps256Yes $1.52HalfYesOpen, Short15 kV
ADM3076E  +3.316Mbps16Mbps256- $1.62FullYesOpen, Short15 kV
ADM3077E  +3.316Mbps16Mbps256- $1.57FullNoOpen, Short15 kV
ADM3078E  +3.316Mbps16Mbps256- $1.55HalfYesOpen, Short15 kV
ADM3483  +3.3250Kbps250Kbps32- $0.91HalfYesOpen---
ADM3483E  +3.3250Kbps250Kbps32- $1.32HalfYesOpen15 kV
ADM3485  +3.310Mbps10Mbps32- $1.01HalfYesOpen---
ADM3485EReference Circuit Available  +3.312Mbps12Mbps32- $1.32HalfYesOpen15 kV
ADM3486E  +3.32.5Mbps2.5Mbps32- $1.32HalfYesOpen15 kV
ADM3488  +3.3250Kbps250Kbps32- $0.91FullNoOpen---
ADM3488E  +3.3250Kbps250Kbps32- $1.32FullNoOpen15 kV
ADM3490  +3.310Mbps10Mbps32- $1.01FullNoOpen---
ADM3490E  +3.312Mbps12Mbps32- $1.37FullNoOpen15 kV
ADM3491  +3.310Mbps10Mbps32- $1.37FullYesOpen---
ADM3491E  +3.312Mbps12Mbps32- $1.42FullYesOpen15 kV
ADM3493  +3.3250Kbps250Kbps256- $0.96HalfYesOpen---
ADM4168E✓
  		+510Mbps10Mbps-- $0.8HalfYes-15 kV
ADM483  +5250Kbps250Kbps32- $0.67HalfYesOpen---
ADM483E  +5250Kbps250Kbps32- $1.27HalfYesOpen15 kV
ADM485  +55Mbps5Mbps32- $1.31HalfYesOpen---
ADM4850  +5115Kbps115Kbps256- $0.71HalfYesOpen, Short---
ADM4851  +5500Kbps500Kbps256- $0.71HalfYesOpen, Short---
ADM4852  +52.5Mbps2.5Mbps256- $0.71HalfYesOpen, Short---
ADM4853  +510Mbps10Mbps256- $0.71HalfYesOpen, Short---
ADM4854  +5115Kbps115Kbps256- $0.71FullNoOpen, Short---
ADM4855  +5500Kbps500Kbps256- $0.71FullNoOpen, Short---
ADM4856  +52.5Mbps2.5Mbps256- $0.71FullNoOpen, Short---
ADM4857  +510Mbps10Mbps256- $0.71FullNoOpen, Short---
ADM485E  +52.5Mbps2.5Mbps32- $1.32HalfYesOpen15 kV
ADM487E  +5250Kbps250Kbps128Yes $1.32HalfYesOpen15 kV
ADM488  +5250Kbps250Kbps32- $1.11FullNoOpen---
ADM488A  +5250Kbps250Kbps32- $0.9FullNo--
ADM489  +5250Kbps250Kbps32- $1.62FullYesOpen---
ADM489A  +5250Kbps250Kbps32- $1.05FullYes--
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