RS-485およびRS-422インターフェース

RS-485仕様は、真のマルチポイント通信ネットワークの条件を満たすもので、バス1本(2線)あたり最大32個ずつのドライバとレシーバが定められています。
一部のRS-485トランシーバは、入力インピーダンスを変更して、同じバスにさらに最大8倍のノードを追加できます。
アナログ・デバイセズは、さまざまな標準RS-485/RS-422トランシーバと、iCoupler®絶縁型RS-485/RS-422トランシーバを提供し、数多くのアプリケーションに対応します。
製品セレクション・テーブル

RS-485およびRS-422インターフェース

Interface RS-485

Part#Interface ProtocolsData Rate RS-485Data Rate RS-422Number-RxNumber-TxFull or Half DuplexNumber of Nodes On BusDriver/Receiver EnableESD Protection VoltageFail SafeIsupply (max)US Price 1000-4999
ADM4168E RS-485 10 Mbps 10 Mbps - - Half - Yes 15 kV - 5 mA $0.80
ADM2687E RS-485 500 kbps - 1 1 Full 256 Yes 15 kV Open, Short - $6.50
ADM2682E RS-485 16 Mbps 16 Mbps 1 1 Full 256 Yes 15 kV Open, Short - $7.50
ADM2481 RS-422, RS-485 500 kbps 500 kbps 1 1 Half 256 Yes --- Open, Short - $2.90
ADM489A RS-485 250 kbps 250 kbps 1 1 Full 32 Yes - - 37 µA $1.05
ADM488A RS-485 250 kbps 250 kbps 1 1 Full 32 No - - 37 µA $0.90
ADM2587EReference Circuit Available RS-422, RS-485 500 kbps 500 kbps 1 1 Full 256 Yes 15 kV Open, Short 125 mA $5.50
ADM2582E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 256 Yes 15 kV Open, Short 230 mA $6.50
ADM1490E RS-485 16 Mbps 16 Mbps 1 1 Full 32 No 8 kV Open 1.2 mA $1.15
ADM1491E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 32 Yes 8 kV Open 1.2 mA $1.15
ADM2487E RS-422, RS-485 500 kbps 500 kbps 1 1 Full 256 Yes 15 kV Open, Short 4 mA $3.64
ADM2484E RS-422, RS-485 500 kbps 500 kbps 1 1 Full 256 Yes 15 kV Open, Short 2 mA $3.04
ADM2482E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 256 Yes 15 kV Open, Short 6 mA $4.00
ADM2491E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 32 Yes 8 kV Open - $4.76
ADM487E RS-422, RS-485 250 kbps 250 kbps 1 1 Half 128 Yes 15 kV Open 400 µA $1.32
ADM485E RS-422, RS-485 2.5 Mbps 2.5 Mbps 1 1 Half 32 Yes 15 kV Open 900 µA $0.95
ADM2485Reference Circuit Available RS-422, RS-485 16 Mbps 16 Mbps 1 1 Half 50 Yes --- Open - $4.20
ADM1487E RS-422, RS-485 2.5 Mbps 2.5 Mbps 1 1 Half 128 Yes 15 kV Open 500 µA $0.95
ADM3491E RS-422, RS-485 12 Mbps 12 Mbps 1 1 Full 32 Yes 15 kV Open 2.2 mA $1.42
ADM3490E RS-422, RS-485 12 Mbps 12 Mbps 1 1 Full 32 No 15 kV Open 2.2 mA $1.37
ADM3488E RS-422, RS-485 250 kbps 250 kbps 1 1 Full 32 No 15 kV Open 2.2 mA $1.32
ADM3486E RS-422, RS-485 2.5 Mbps 2.5 Mbps 1 1 Half 32 Yes 15 kV Open 2.2 mA $1.32
ADM3483E RS-422, RS-485 250 kbps 250 kbps 1 1 Half 32 Yes 15 kV Open 2.2 mA $1.32
ADM3078E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Half 256 Yes 15 kV Open, Short 1.5 mA $1.55
ADM3077E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 256 No 15 kV Open, Short 1.5 mA $1.57
ADM3076E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 256 Yes 15 kV Open, Short 1.5 mA $1.62
ADM3075E RS-422, RS-485 500 kbps 500 kbps 1 1 Half 256 Yes 15 kV Open, Short 1.5 mA $1.52
ADM3074E RS-422, RS-485 500 kbps 500 kbps 1 1 Full 256 No 15 kV Open, Short 1.5 mA $1.57
ADM3073E RS-422, RS-485 500 kbps 500 kbps 1 1 Half 256 Yes 15 kV Open, Short 1.5 mA $1.62
ADM3072E RS-422, RS-485 250 kbps 250 kbps 1 1 Half 256 Yes 15 kV Open, Short 1.5 mA $1.52
ADM3071E RS-422, RS-485 250 kbps 250 kbps 1 1 Full 256 No 15 kV Open, Short 1.5 mA $1.57
ADM3070E RS-422, RS-485 250 kbps 250 kbps 1 1 Full 256 Yes 15 kV Open, Short 1.5 mA $1.62
ADM2490E RS-422, RS-485 16 Mbps 16 Mbps 1 1 Full 32 No 8 kV Open 4 mA $4.55
ADM3493 RS-422, RS-485 250 kbps 250 kbps 1 1 Half 256 Yes --- Open 2.2 mA $0.96
ADM3490 RS-422, RS-485 10 Mbps 10 Mbps 1 1 Full 32 No --- Open 2.2 mA $1.01
ADM3488 RS-422, RS-485 250 kbps 250 kbps 1 1 Full 32 No --- Open 2.2 mA $0.91
ADM3485 RS-422, RS-485 10 Mbps 10 Mbps 1 1 Half 32 Yes --- Open 2.2 mA $1.01
ADM3483Reference Circuit Available RS-422, RS-485 250 kbps 250 kbps 1 1 Half 32 Yes --- Open 2.2 mA $0.91
ADM4857 RS-422, RS-485 10 Mbps 10 Mbps 1 1 Full 256 No --- Open, Short 500 µA $0.80
ADM4856 RS-422, RS-485 2.5 Mbps 2.5 Mbps 1 1 Full 256 No --- Open, Short 500 µA $0.80
ADM4855 RS-422, RS-485 500 kbps 500 kbps 1 1 Full 256 No --- Open, Short 200 µA $0.80
ADM4854 RS-422, RS-485 115 kbps 115 kbps 1 1 Full 256 No --- Open, Short 160 µA $0.80
ADM4853 RS-422, RS-485 10 Mbps 10 Mbps 1 1 Half 256 Yes --- Open, Short 500 µA $0.80
ADM4852 RS-422, RS-485 2.5 Mbps 2.5 Mbps 1 1 Half 256 Yes --- Open, Short 500 µA $0.71
ADM4851 RS-422, RS-485 500 kbps 500 kbps 1 1 Half 256 Yes --- Open, Short 200 µA $0.80
ADM4850 RS-422, RS-485 115 kbps 115 kbps 1 1 Half 256 Yes --- Open, Short 160 µA $0.71
ADM483 RS-422, RS-485 250 kbps 250 kbps 1 1 Half 32 Yes --- Open 650 µA $0.67
ADM2483 RS-422, RS-485 500 kbps - 1 1 Half 256 Yes --- Open, Short 2.5 mA $3.04
ADM2486 RS-422, RS-485 20 Mbps - 1 1 Half 50 Yes --- Open 3 mA $3.50
ADM1486 RS-422, RS-485 30 Mbps 30 Mbps 1 1 Half 50 Yes --- Open 2 mA $1.76
ADM3485EReference Circuit Available RS-422, RS-485 12 Mbps 12 Mbps 1 1 Half 32 Yes 15 kV Open 2.2 mA $1.32
ADM3491 RS-422, RS-485 10 Mbps 10 Mbps 1 1 Full 32 Yes --- Open 1 µA $1.37
ADM489 RS-422, RS-485 250 kbps 250 kbps 1 1 Full 32 Yes --- Open 74 µA $1.62
ADM488 RS-422, RS-485 250 kbps 250 kbps 1 1 Full 32 No --- Open 74 µA $1.22
ADM483E RS-422, RS-485 250 kbps 250 kbps 1 1 Half 32 Yes 15 kV Open 10 µA $1.27
ADM485 RS-422, RS-485 5 Mbps 5 Mbps 1 1 Half 32 Yes --- Open 2.2 mA $1.31
ADM1485 RS-422, RS-485 30 Mbps 30 Mbps 1 1 Half 32 Yes --- Open 2.2 mA $1.63