RS-485/RS-422

When communicating at high data rates, or over long distances differential data transmission offers superior performance in most applications. Differential signals can help nullify the effects of ground shifts and induced noise signals that can appear as common mode voltages on a network. The RS-485 specification meets the requirements for a truly multi-point communications network, and the standard specifies up to 32 drivers and 32 receivers on a single (2-wire) bus. Some RS-485 Transceivers modify the input impedance to allow up to 8-times more nodes to be connected to the same bus. The most common RS-485 application is inter-programmable logic controller communication in industrial environments. Other common uses are point of sale terminals in stores and remote meters. Analog Devices offers a wide range of standard RS-485/RS-422 Transceivers and iCoupler® Isolated RS-485/RS-422 Transceivers to suit many applications.

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Isolated RS-485

Part# Insulation Rating (kVrms)ESD Protection VDataRate RS-485Pwr Supply (Vnom)Integrated isoPowerIntegrated Transformer Dr# of Nodes On BusShutdown/DisableDriver/Receiver EnableFail SafeUS Price 1000-4999
ADM4168E-15 kV10Mbps+5----Yes- $0.8
ADM3252E2.5KV rms15 kV-----No-- $8.49
ADM24812.5KV rms---500Kbps+3 to +5 & ISO +5----256NoYesOpen, Short $3.04
ADM3251E2.5KV rms15 kV-(Primary +3.3/Sec +3.3), (Primary +5/Sec None), +2.7 to +3.0---NoNo- $2.99
ADM24832.5KV rms---500Kbps+3 to +5 & ISO +5----256NoYesOpen, Short $3.04
ADM24862.5KV rms---20Mbps+3 to +5 & ISO +5----50NoYesOpen $5.04
ADM1486----30Mbps+5--50NoYesOpen $2.07
ADM101E-15 kV-+5---Yes-- $0.78
ADM1385-----+3.3---Yes-- $1.42
ADM1181A-15 kV-+5---No-- $1.42
ADM1485----30Mbps+5--32NoYesOpen $1.63
AD7306-----+5---No-- $8.02
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Interface RS-485 And RS-422

Part# Pwr Supply (Vnom)Full-Half DuplexESD-ProtectionData Rate# of Nodes On BusDrvr/Rcvr EnableFail SafeAutomotive QualifiedUS Price 1000-4999
ADM1485+5Half---30Mbps32YesOpen- $1.63
ADM1486+5Half---30Mbps50YesOpen- $2.07
ADM1487E+5Half15 kV2.5Mbps128YesOpen- $1.32
ADM1490E+5Full8 kV16Mbps32NoOpen- $1.15
ADM1491E+5Full8 kV16Mbps32YesOpen- $1.15
ADM2481+3 to +5 & ISO +5Half---500Kbps256YesOpen, Short- $3.04
ADM2482E+3 to +5 & ISO +3Full, Half15 kV16Mbps256YesOpen, Short- $4.66
ADM2483+3 to +5 & ISO +5Half---500Kbps256YesOpen, Short- $3.04
ADM2484E+3 to +5 & ISO +3Full, Half15 kV500Kbps256YesOpen, Short- $3.04
ADM2485Reference Circuit Available+3 to +5 & ISO +5Half---16Mbps50YesOpen- $5.57
ADM2486+3 to +5 & ISO +5Half---20Mbps50YesOpen- $5.04
ADM2487E+3 to +5 & ISO +3Full, Half15 kV500Kbps256YesOpen, Short- $3.64
ADM2490E+3 to +5 & ISO +5Full8 kV16Mbps32NoOpen- $4.55
ADM2491E+3 to +5 & ISO +5Full, Half8 kV16Mbps32YesOpen- $4.76
ADM2582E+3.3, +5Full, Half15 kV16Mbps256YesOpen, Short- $6.5
ADM2587E+3.3, +5Full, Half15 kV500Kbps256YesOpen, Short- $5.5
ADM2682E+3.3, +5Full, Half15 kV16Mbps256YesOpen, Short- $7.5
ADM2687E+3.3, +5Full, Half15 kV500Kbps256YesOpen, Short- $6.5
ADM3070E+3.3Full15 kV250Kbps256YesOpen, Short- $1.62
ADM3071E+3.3Full15 kV250Kbps256NoOpen, Short- $1.57
ADM3072E+3.3Half15 kV250Kbps256YesOpen, Short- $1.52
ADM3073E+3.3Half15 kV500Kbps256YesOpen, Short- $1.62
ADM3074E+3.3Full15 kV500Kbps256NoOpen, Short- $1.51
ADM3075E+3.3Half15 kV500Kbps256YesOpen, ShortYes $1.52
ADM3076E+3.3Full15 kV16Mbps256YesOpen, Short- $1.62
ADM3077E+3.3Full15 kV16Mbps256NoOpen, Short- $1.57
ADM3078E+3.3Half15 kV16Mbps256YesOpen, Short- $1.55
ADM3483+3.3Half---250Kbps32YesOpen- $0.91
ADM3483E+3.3Half15 kV250Kbps32YesOpen- $1.32
ADM3485+3.3Half---10Mbps32YesOpen- $1.01
ADM3485EReference Circuit Available+3.3Half15 kV12Mbps32YesOpen- $1.32
ADM3486E+3.3Half15 kV2.5Mbps32YesOpen- $1.32
ADM3488+3.3Full---250Kbps32NoOpen- $0.91
ADM3488E+3.3Full15 kV250Kbps32NoOpen- $1.32
ADM3490+3.3Full---10Mbps32NoOpen- $1.01
ADM3490E+3.3Full15 kV12Mbps32NoOpen- $1.37
ADM3491+3.3Full---10Mbps32YesOpen- $1.37
ADM3491E+3.3Full15 kV12Mbps32YesOpen- $1.42
ADM3493+3.3Half---250Kbps256YesOpen- $0.96
ADM4168E+5Half15 kV10Mbps-Yes-- $0.8
ADM483+5Half---250Kbps32YesOpen- $0.67
ADM483E+5Half15 kV250Kbps32YesOpen- $1.27
ADM485+5Half---5Mbps32YesOpen- $1.31
ADM4850+5Half---115Kbps256YesOpen, Short- $0.71
ADM4851+5Half---500Kbps256YesOpen, Short- $0.71
ADM4852+5Half---2.5Mbps256YesOpen, Short- $0.71
ADM4853+5Half---10Mbps256YesOpen, Short- $0.71
ADM4854+5Full---115Kbps256NoOpen, Short- $0.71
ADM4855+5Full---500Kbps256NoOpen, Short- $0.71
ADM4856+5Full---2.5Mbps256NoOpen, Short- $0.71
ADM4857+5Full---10Mbps256NoOpen, Short- $0.71
ADM485E+5Half15 kV2.5Mbps32YesOpen- $1.32
ADM487E+5Half15 kV250Kbps128YesOpenYes $1.32
ADM488+5Full---250Kbps32NoOpen- $1.11
ADM488A+5Full-250Kbps32No-- $0.9
ADM489+5Full---250Kbps32YesOpen- $1.62
ADM489A+5Full-250Kbps32Yes-- $1.05
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