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。
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
最新情報
技術記事
- Balancing the Major Elements of an Isolator for Safety's Sake
- RS-485 Communication Link vs. the Electric Fence: A Demonstration of RS-485 EMC Robustness
- Creepage Requirements for Medical Applications
- MS-2443 : RS-485通信ネットワークの有害なEMCイベントに対する保護 PDF
- Safeguard Your RS485 Communication Networks from Harmful EMC Events PDF
- MS-2155: 絶縁した RS-485 ノードのための絶縁した電源を分割する選択方法と回路 PDF
アプリケーション・ノート
ユーザ・ガイド
- UG-464: Evaluating the ADM4168E ±15 kV ESD Protected Dual RS-422 Transceiver PDF
- UG-543:Evaluation Boards for Full-Duplex and Half-Duplex RS-485 Transceivers PDF
- UG-496: ADM2490E の評価：5kV 信号絶縁、高速(16Mbps)、ESD 保護付、全二重、iCoupler、絶縁型 RS-485 トランシーバ PDF
- UG-311: 信頼性ハンドブック PDF
- UG-317: Evaluation Board for the ADM2682E/ADM2687E 5 kV rms Signal and Power Isolated RS-485 Transceivers with ±15 kV ESD Protection PDF
- UG-316: Evaluation Board for the ADM2481 2.5 kV Signal Isolated, 500 kbps, Half-Duplex RS-485 Transceiver PDF
- UG-302: Evaluation Board for the ADM2491E ±8 kV Signal Isolated, High Speed (16 Mbps), ESD Protected, Full/Half Duplex RS-485 Transceiver PDF
- UG-213: Evaluation Board for the ADM2485 Half-Duplex, Isolated RS-485 Transceiver with Transformer Driver PDF
- UG-210: Evaluation Boards for the ADM2482E and ADM2487E Isolated RS-485 Transceivers PDF
リファレンス設計
RS-485およびRS-422インターフェース
| SortOrder | Part# | Interface Protocol | Data Rate (max) (bps) | Number Rx | Number Tx | Full or Half Duplex Operation | ESD Protection (V) | Fail Safe | Vs+ (min) (V) | Vs+ (max) (V) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC2879X | PROFIBUS, RS-422, RS-485 | 20M | 1 | 1 | Half | 52k | Open, Short, Terminated | 3 | 5.5 | $28.41 (LTC2879XMS8E#PBF) |
| 2 | ADM3062E | RS-485 | 500k | 1 | 1 | Half | 30k | Idle, Open, Short | 3 | 5.5 | $1.07 (ADM3062EACPZ) |
| 3 | ADM3061E | RS-485 | 500k | 1 | 1 | Half | 30k | Idle, Open, Short | 3 | 5.5 | $1.05 (ADM3061EARMZ) |
| 4 | LTC2862A-2 | RS-422, RS-485 | 250k | 1 | 1 | Half | 40k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2862ACDD-2#PBF) |
| 5 | LTC2862A-1 | RS-422, RS-485 | 20M | 1 | 1 | Half | 40k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2862ACDD-1#PBF) |
| 6 | ADM3066E | RS-485 | 50M | 1 | 1 | Half | 30k | Idle, Open, Short | 3 | 5.5 | $1.23 (ADM3066EACPZ) |
| 7 | ADM3095E | RS-485 | 2.5M | 1 | 1 | Half | 30k | Idle, Open, Short | 3 | 5.5 | $4.50 (ADM3095EARZ) |
| 8 | ADM3065E | RS-485 | 50M | 1 | 1 | Half | 30k | Idle, Open, Short | 3 | 5.5 | $1.21 (ADM3065EARMZ) |
| 9 | LTC2877 | PROFIBUS IEC 61158-2, RS-485 | 20M | 1 | 1 | PROFIBUS IEC 61158-2 Compliant | 52k | Open, Shorted, Terminated | 3 | 5.5 | $2.73 (LTC2877CDD#PBF) |
| 10 | LTC2876 | PROFIBUS IEC 61158-2, RS-485 | 20M | 1 | 1 | PROFIBUS IEC 61158-2 Compliant | 52k | Open, Shorted, Terminated | 3 | 5.5 | $2.48 (LTC2876CDD#PBF) |
| 11 | LTC2873 | RS-232, RS-422, RS-485, RS-562 | 20M | 1 | 1 | - | 26 | - | 3 | 5.5 | $4.45 (LTC2873CUFD#PBF) |
| 12 | ADM4168E | RS-422 | 30M | - | - | Half | 15k | - | - | 5 | $0.80 (ADM4168EBRUZ) |
| 13 | LTC2865 | RS-422, RS-485 | 20k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 5.5 | $2.65 (LTC2865CDE#PBF) |
| 14 | LTC2864-2 | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 5.5 | $2.55 (LTC2864CS-2#PBF) |
| 15 | LTC2864-1 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 5.5 | $2.55 (LTC2864CS-1#PBF) |
| 16 | LTC2863-2 | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2863CDD-2#PBF) |
| 17 | LTC2863-1 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2863CDD-1#PBF) |
| 18 | LTC2862-2 | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2862CDD-2#PBF) |
| 19 | LTC2862-1 | RS-422, RS-485 | 20M | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 5.5 | $2.35 (LTC2862CDD-1#PBF) |
| 20 | ADM489A | RS-422, RS-485 | 250k | 1 | 1 | Full | 4k | Open | 4.5 | 5.5 | $1.08 (ADM489ABRZ) |
| 21 | ADM488A | RS-422, RS-485 | 250k | 1 | 1 | Full | 4k | Open | 4.5 | 5.5 | $0.93 (ADM488ABRZ) |
| 22 | ADM1490E | RS-422, RS-485 | 16M | 1 | 1 | Full | 8k | Open | 4.75 | 5.25 | $1.18 (ADM1490EBRZ) |
| 23 | ADM1491E | RS-422, RS-485 | 16M | 1 | 1 | Full | 8k | Open | 4.75 | 5.25 | $1.18 (ADM1491EBRZ) |
| 24 | ADM487E | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Open | 4.75 | 5.25 | $1.36 (ADM487EARZ) |
| 25 | ADM485E | RS-422, RS-485 | 2.5M | 1 | 1 | Half | 15k | Open | 4.75 | 5.25 | $0.98 (ADM485EARZ) |
| 26 | ADM1487E | RS-422, RS-485 | 2.5M | 1 | 1 | Half | 15k | Open | 4.75 | 5.25 | $0.98 (ADM1487EARZ) |
| 27 | ADM3491E | RS-422, RS-485 | 12M | 1 | 1 | Full | 15k | Open | 3 | 3.6 | $1.46 (ADM3491EARZ) |
| 28 | ADM3490E | RS-422, RS-485 | 12M | 1 | 1 | Full | 15k | Open | 3 | 3.6 | $1.41 (ADM3490EARZ) |
| 29 | ADM3488E | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Open | 3 | 3.6 | $1.36 (ADM3488EARZ) |
| 30 | ADM3486E | RS-422, RS-485 | 2.5M | 1 | 1 | Half | 15k | Open | 3 | 3.6 | $1.36 (ADM3486EARZ) |
| 31 | ADM3483E | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Open | 3 | 3.6 | $1.36 (ADM3483EARZ) |
| 32 | ADM3078E | RS-422, RS-485 | 16M | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 3.6 | $1.60 (ADM3078EARZ) |
| 33 | ADM3077E | RS-422, RS-485 | 16M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.62 (ADM3077EARZ) |
| 34 | ADM3076E | RS-422, RS-485 | 16M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.67 (ADM3076EARZ) |
| 35 | ADM3075E | RS-422, RS-485 | 500k | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 3.6 | $1.57 (ADM3075EARZ) |
| 36 | ADM3074E | RS-422, RS-485 | 500k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.62 (ADM3074EARZ) |
| 37 | ADM3073E | RS-422, RS-485 | 500k | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 3.6 | $1.67 (ADM3073EARZ) |
| 38 | ADM3072E | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 3.6 | $1.57 (ADM3072EARZ) |
| 39 | ADM3071E | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.62 (ADM3071EARZ) |
| 40 | ADM3070E | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.67 (ADM3070EARZ) |
| 41 | LTC2858-2 | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 5 | 5.5 | $1.55 (LTC2858CMS-2#PBF) |
| 42 | LTC2858-1 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 5 | 5.5 | $1.55 (LTC2858CMS-1#PBF) |
| 43 | LTC2857-2 | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 5 | 5.5 | $1.55 (LTC2857CMS8-2#PBF) |
| 44 | LTC2857-1 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 5 | 5.5 | $1.55 (LTC2857CMS8-1#PBF) |
| 45 | LTC2856-2 | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Idle, Open, Short | 5 | 5.5 | $1.45 (LTC2856CMS8-2#PBF) |
| 46 | LTC2856-1 | RS-422, RS-485 | 20M | 1 | 1 | Half | 15k | Idle, Open, Short | 5 | 5.5 | $1.45 (LTC2856CMS8-1#PBF) |
| 47 | LTC2861 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 5 | 5.5 | $1.70 (LTC2861CDE#PBF) |
| 48 | LTC2859 | RS-422, RS-485 | 20M | 1 | 1 | Half | 15k | Idle, Open, Short | 5 | 5.5 | $1.55 (LTC2859CDD#PBF) |
| 49 | LTC2855 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 3.3 | 5.5 | $1.70 (LTC2855CDE#PBF) |
| 50 | LTC2854 | RS-422, RS-485 | 20M | 1 | 1 | Half | 15k | Idle, Open, Short | 3.3 | 5.5 | $1.55 (LTC2854CDD#PBF) |
| 51 | LTC2852 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.55 (LTC2852CDD#PBF) |
| 52 | LTC2851 | RS-422, RS-485 | 20M | 1 | 1 | Full | 15k | Idle, Open, Short | 3 | 3.6 | $1.55 (LTC2851CDD#PBF) |
| 53 | LTC2850 | RS-422, RS-485 | 20M | 1 | 1 | Half | 15k | Idle, Open, Short | 3 | 3.6 | $1.45 (LTC2850CDD#PBF) |
| 54 | ADM3493 | RS-422, RS-485 | 250k | 1 | 1 | Half | - | Open | 3 | 3.6 | $0.99 (ADM3493ARZ) |
| 55 | ADM3490 | RS-422, RS-485 | 10M | 1 | 1 | Full | - | Open | 3 | 3.6 | $1.04 (ADM3490ARZ) |
| 56 | ADM3488 | RS-422, RS-485 | 250k | 1 | 1 | Full | - | Open | 3 | 3.6 | $0.94 (ADM3488ARZ) |
| 57 | ADM3485 | RS-422, RS-485 | 10M | 1 | 1 | Half | - | Open | 3 | 3.6 | $0.94 (ADM3485ARZ) |
| 58 | ADM3483 | RS-422, RS-485 | 250k | 1 | 1 | Half | - | Open | 3 | 3.6 | $0.94 (ADM3483ARZ) |
| 59 | ADM4857 | RS-422, RS-485 | 10M | 1 | 1 | Full | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4857ARZ) |
| 60 | ADM4856 | RS-422, RS-485 | 2.5M | 1 | 1 | Full | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4856ARZ) |
| 61 | ADM4855 | RS-422, RS-485 | 500k | 1 | 1 | Full | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4855ARZ) |
| 62 | ADM4854 | RS-422, RS-485 | 115k | 1 | 1 | Full | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4854ARZ) |
| 63 | ADM4853 | RS-422, RS-485 | 10M | 1 | 1 | Half | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4853ACPZ-REEL7) |
| 64 | ADM4852 | RS-422, RS-485 | 2.5M | 1 | 1 | Half | - | Open, Short | 4.75 | 5.25 | $0.73 (ADM4852ACPZ-REEL7) |
| 65 | ADM4851 | RS-422, RS-485 | 500k | 1 | 1 | Half | - | Open, Short | 4.75 | 5.25 | $0.82 (ADM4851ARZ) |
| 66 | ADM4850 | RS-422, RS-485 | 115k | 1 | 1 | Half | - | Open, Short | 4.75 | 5.25 | $0.73 (ADM4850ACPZ-REEL7) |
| 67 | ADM483 | RS-422, RS-485 | 250k | 1 | 1 | Half | - | Open | 4.75 | 5.25 | $0.69 (ADM483JRZ) |
| 68 | ADM1486 | RS-422, RS-485 | 30M | 1 | 1 | Half | - | Open | 4.75 | 5.25 | $1.20 (ADM1486ARZ) |
| 69 | LTC1689 | RS-422, RS-485 | 100M | - | 4 | Quad Driver | 4 | - | 3 | 5.5 | $4.95 (LTC1689CS#PBF) |
| 70 | LTC1688 | RS-422, RS-485 | 100M | - | 4 | Quad Driver | 4 | - | 3 | 5.5 | $4.95 (LTC1688CS#PBF) |
| 71 | LT1791A | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | Idle, Open, Short | 4.75 | 5.25 | $2.60 (LT1791ACN#PBF) |
| 72 | LT1791 | RS-422, RS-485 | 250k | 1 | 1 | Full | 15k | - | 4.75 | 5.25 | $2.15 (LT1791CN#PBF) |
| 73 | LT1785A | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Idle, Open, Short | 4.75 | 5.25 | $2.35 (LT1785ACN8#PBF) |
| 74 | LT1785 | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | - | 4.75 | 5.25 | $1.95 (LT1785CN8#PBF) |
| 75 | LTC1690 | RS-422, RS-485 | 5M | 1 | 1 | Full | 15k | Idle, Open, Short | 4.75 | 5.25 | $1.65 (LTC1690CN8#PBF) |
| 76 | LTC1484 | RS-422, RS-485 | 4M | 1 | 1 | Half | 15k | Idle, Open, Short | 4.75 | 5.5 | $1.65 (LTC1484CN8#PBF) |
| 77 | LTC1482 | RS-422, RS-485 | 4M | 1 | 1 | Half | 15k | Idle, Open, Short | 4.75 | 5.25 | $1.95 (LTC1482CN8#PBF) |
| 78 | ADM3485E | RS-422, RS-485 | 12M | 1 | 1 | Half | 15k | Open | 3 | 3.6 | $1.04 (ADM3485EARZ) |
| 79 | ADM3491 | RS-422, RS-485 | 10M | 1 | 1 | Full | - | Open | 3 | 3.6 | $1.51 (ADM3491ARZ) |
| 80 | ADM489 | RS-422, RS-485 | 250k | 1 | 1 | Full | - | Open | 4.5 | 5.5 | $1.96 (ADM489ARUZ) |
| 81 | ADM488 | RS-422, RS-485 | 250k | 1 | 1 | Full | - | Open | 4.5 | 5.5 | $1.34 (ADM488ANZ) |
| 82 | LTC1687 | RS-422, RS-485 | 52M | 1 | 1 | Full | 4k | Open | 5 | 6 | $4.20 (LTC1687CS#PBF) |
| 83 | LTC1686 | RS-422, RS-485 | 52M | 1 | 1 | Full | 4k | Open | 4.75 | 5.25 | $4.20 (LTC1686CS8#PBF) |
| 84 | LTC1685 | RS-422, RS-485 | 52M | 1 | 1 | Half | 4k | Idle, Open, Short | 4.75 | 5.25 | $2.95 (LTC1685CS8#PBF) |
| 85 | LTC1519 | RS-422, RS-485 | 50M | 4 | - | Quad Receiver | 4k | Idle, Open, Short | 4.5 | 5.5 | $5.35 (LTC1519CS#PBF) |
| 86 | LTC1518 | RS-422, RS-485 | 52M | 4 | - | Quad Receiver | 4k | Idle, Open, Short | 4.5 | 5.5 | $5.35 (LTC1518CS#PBF) |
| 87 | ADM483E | RS-422, RS-485 | 250k | 1 | 1 | Half | 15k | Open | 4.5 | 5.5 | $0.95 (ADM483EARZ) |
| 88 | LTC1520 | RS-422, RS-485 | 50M | 4 | - | Quad Receiver | 4k | - | 4.5 | 5.5 | $5.35 (LTC1520CS#PBF) |
| 89 | LTC1480 | RS-422, RS-485 | 2.5M | 1 | 1 | Half | - | Open | 3 | 3.6 | $2.55 (LTC1480CN8#PBF) |
| 90 | LTC1487 | RS-422, RS-485 | 250k | 1 | 1 | Half | 10k | Open | 4.75 | 5.25 | $1.45 (LTC1487CN8#PBF) |
| 91 | LTC1483 | RS-422, RS-485 | 150k | 1 | 1 | Half | 10k | Open | 4.75 | 5.25 | $1.45 (LTC1483CN8#PBF) |
| 92 | LTC1481 | RS-422, RS-485 | 2.5M | 1 | 1 | Half | 10k | Open | 4.75 | 5.25 | $1.45 (LTC1481CN8#PBF) |
| 93 | ADM485 | RS-422, RS-485 | 5M | 1 | 1 | Half | - | Open | 4.75 | 5.25 | $0.80 (ADM485JRZ) |
| 94 | ADM1485 | RS-422, RS-485 | 30M | 1 | 1 | Half | - | Open | 4.75 | 5.25 | $1.10 (ADM1485JRZ) |
| 95 | LTC490 | RS-422, RS-485 | 2.5M | 1 | 1 | Full | 2k | Open | 4.75 | 5.25 | $2.40 (LTC490CN8#PBF) |
| 96 | LTC1485 | RS-422, RS-485 | 10M | 1 | 1 | Half | 10k | Open | 4.75 | 5.5 | $1.60 (LTC1485CN8#PBF) |
| 97 | LTC491 | RS-422, RS-485 | 20M | 1 | 1 | Full | 2k | Open | 4.75 | 5.25 | $2.65 (LTC491CN#PBF) |
| 98 | LTC489 | RS-422, RS-485 | 10M | 4 | - | Quad Receiver | 4k | Open | 4.75 | 5.25 | $3.55 (LTC489CN#PBF) |
| 99 | LTC488 | RS-422, RS-485 | 10M | 4 | - | Quad Receiver | 2k | Open | 4.75 | 5.25 | $3.55 (LTC488CN#PBF) |
| 100 | LTC487 | RS-422, RS-485 | 10M | - | 4 | Quad Driver | 2k | Open | 4.75 | 5.25 | $3.55 (LTC487CN#PBF) |
| 101 | LTC486 | RS-422, RS-485 | 10M | - | 4 | Quad Driver | 2k | Open | 4.75 | 5.25 | $3.55 (LTC486CN#PBF) |
| 102 | LTC485 | RS-422, RS-485 | 10M | 1 | 1 | Half | 4k | Open | 4.75 | 5.25 | $1.30 (LTC485CN8#PBF) |
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