ADM2491E: 高速，ESD保护，半/全双工，iCoupler隔离RS-485收发器 |
ADM2491E是一款隔离的数据收发器，具有±8 kV ESD保护功能，适合多点传输线路的高速半双工或全双工通信。对于半双工工作，发送器输出与接收器输入共用相同的传输线路。发送器输出引脚Y与接收器输入引脚A在外部连接，发送器输出引脚Z与接收器输入引脚B在外部连接。ADM2491E针对均衡的传输线路而设计，符合ANSI TIA/EIA RS-485-A-1998与ISO 8482： 1987（E）标准。这款器件采用ADI公司的iCoupler®技术，在单芯片内集成了三通道隔离器、三态差分线路驱动器以及差分输入接收器。
差分收发器输出与接收器输入具有静电放电电路，可为人体模型（HBM）提供±8 kV的保护。ADM2491E的逻辑端采用5 V或3.3 V电源供电，总线端则需要隔离的5 V电源。这款器件具有限流和过热关断特性，能够防止输出短路，并防 ...More
ADM2491E是一款隔离的数据收发器，具有±8 kV ESD保护功能，适合多点传输线路的高速半双工或全双工通信。对于半双工工作，发送器输出与接收器输入共用相同的传输线路。发送器输出引脚Y与接收器输入引脚A在外部连接，发送器输出引脚Z与接收器输入引脚B在外部连接。ADM2491E针对均衡的传输线路而设计，符合ANSI TIA/EIA RS-485-A-1998与ISO 8482： 1987（E）标准。这款器件采用ADI公司的iCoupler®技术，在单芯片内集成了三通道隔离器、三态差分线路驱动器以及差分输入接收器。
差分收发器输出与接收器输入具有静电放电电路，可为人体模型（HBM）提供±8 kV的保护。ADM2491E的逻辑端采用5 V或3.3 V电源供电，总线端则需要隔离的5 V电源。这款器件具有限流和过热关断特性，能够防止输出短路，并防止出现由于总线争用而引起功耗过大的情况。ADM2491E采用宽体16引脚SOIC封装，工作温度范围为-40°C ～ +85°C。
| Part# | Min Pos Supply | Pwr Supply (Vnom) | Full-Half Duplex | ESD-Protection | Data Rate | # of Nodes On Bus | Drvr/Rcvr Enable | Fail Safe | Isolation V (rms) | Available Packages | Price* (1000-4999) | Protocols |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADM2482E | +3 | +3 to +5 & ISO +3 | Full, Half | 15 kV | 16Mbps | 256 | Yes | Open, Short | 2.5 kV | SOIC | $4.66 | RS-422, RS-485 |
| ADM2484E | +3 | +3 to +5 & ISO +3 | Full, Half | 15 kV | 500kbps | 256 | Yes | Open, Short | 5 kV | SOIC | $3.04 | RS-422, RS-485 |
| ADM2487E | +3 | +3 to +5 & ISO +3 | Full, Half | 15 kV | 500kbps | 256 | Yes | Open, Short | 2.5 kV | SOIC | $3.64 | RS-422, RS-485 |
| ADM2491E | +3 | +3 to +5 & ISO +5 | Full, Half | 8 kV | 16Mbps | 32 | Yes | Open | 5 kV | SOIC | $4.76 | RS-422, RS-485 |
| ADM2582E | +3 | 3.3, 5 | Full, Half | 15 kV | 16Mbps | 256 | Yes | Open, Short | 2.5 kV | SOIC | $6.50 | RS-422, RS-485 |
| ADM2587E | +3 | 3.3, 5 | Full, Half | 15 kV | 500kbps | 256 | Yes | Open, Short | 2.5 kV | SOIC | $5.50 | RS-422, RS-485 |
| ADN4668 | +3 | 3.3 | --- | 15 kV | 400Mbps | - | Yes | - | - | SOIC, SOP | $1.16 | EIA-644, LVDS |
| ADM2490E | +2.7 | +3 to +5 & ISO +5 | Full | 8 kV | 16Mbps | 32 | No | Open | 5 kV | SOIC | $4.55 | RS-422, RS-485 |
| ADM2483 | +2.7 | +3 to +5 & ISO +5 | Half | --- | 500kbps | 256 | Yes | Open, Short | 2.5 kV | SOIC | $3.04 | RS-485 |
| ADM2485 | +2.7 | +3 to +5 & ISO +5 | Half | --- | 16Mbps | 50 | Yes | Open | 2.5 kV | SOIC | $5.57 | RS-422, RS-485 |
| ADM2486 | +2.7 | +3 to +5 & ISO +5 | Half | --- | 20Mbps | 50 | Yes | Open | 2.5 kV | SOIC | $5.04 | RS-485 |
| ADM3070E | +3 | 3.3 | Full | 15 kV | 250kbps | 256 | Yes | Open, Short | --- | SOIC | $1.62 | RS-422, RS-485 |
| ADM3071E | +3 | 3.3 | Full | 15 kV | 250kbps | 256 | No | Open, Short | --- | SOIC | $1.57 | RS-422, RS-485 |
| ADM3488E | +3 | 3.3 | Full | 15 kV | 250kbps | 32 | No | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM3488 | +3 | 3.3 | Full | --- | 250kbps | 32 | No | Open | --- | SOIC | $0.91 | RS-422, RS-485 |
| ADM3074E | +3 | 3.3 | Full | 15 kV | 500kbps | 256 | No | Open, Short | --- | SOIC | $1.52 | RS-422, RS-485 |
| ADM3490 | +3 | 3.3 | Full | --- | 10Mbps | 32 | No | Open | --- | SOIC | $1.01 | RS-422, RS-485 |
| ADM3491 | +3 | 3.3 | Full | --- | 10Mbps | 32 | Yes | Open | --- | DIP, SOIC, SOP | $1.37 | RS-422, RS-485 |
| ADM3490E | +3 | 3.3 | Full | 15 kV | 12Mbps | 32 | No | Open | --- | SOIC | $1.37 | RS-422, RS-485 |
| ADM3491E | +3 | 3.3 | Full | 15 kV | 12Mbps | 32 | Yes | Open | --- | SOIC | $1.42 | RS-422, RS-485 |
| ADM3076E | +3 | 3.3 | Full | 15 kV | 16Mbps | 256 | Yes | Open, Short | --- | SOIC | $1.62 | RS-422, RS-485 |
| ADM3077E | +3 | 3.3 | Full | 15 kV | 16Mbps | 256 | No | Open, Short | --- | SOIC | $1.57 | RS-422, RS-485 |
| ADM3072E | +3 | 3.3 | Half | 15 kV | 250kbps | 256 | Yes | Open, Short | --- | SOIC | $1.52 | RS-422, RS-485 |
| ADM3483E | +3 | 3.3 | Half | 15 kV | 250kbps | 32 | Yes | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM3493 | +3 | 3.3 | Half | --- | 250kbps | 256 | Yes | Open | --- | SOIC | $0.96 | RS-422, RS-485 |
| ADM3483 | +3 | 3.3 | Half | --- | 250kbps | 32 | Yes | Open | --- | SOIC | $0.91 | RS-422, RS-485 |
| ADM3073E | +3 | 3.3 | Half | 15 kV | 500kbps | 256 | Yes | Open, Short | --- | SOIC | $1.62 | RS-422, RS-485 |
| ADM3075E | +3 | 3.3 | Half | 15 kV | 500kbps | 256 | Yes | Open, Short | --- | SOIC | $1.52 | RS-422, RS-485 |
| ADM3486E | +3 | 3.3 | Half | 15 kV | 2.5Mbps | 32 | Yes | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM3485 | +3 | 3.3 | Half | --- | 10Mbps | 32 | Yes | Open | --- | SOIC | $1.01 | RS-422, RS-485 |
| ADM3485E | +3 | 3.3 | Half | 15 kV | 12Mbps | 50 | Yes | Open | --- | DIP, SOIC | $1.32 | RS-422, RS-485 |
| ADM3078E | +3 | 3.3 | Half | 15 kV | 16Mbps | 256 | Yes | Open, Short | --- | SOIC | $1.55 | RS-422, RS-485 |
| ADM488 | +4.5 | 5 | Full | --- | 250kbps | 32 | No | Open | --- | DIP, SOIC | $1.11 | RS-422, RS-485 |
| ADM489 | +4.5 | 5 | Full | --- | 250kbps | 32 | Yes | Open | --- | DIP, SOIC, SOP | $1.62 | RS-422, RS-485 |
| ADM483E | +4.5 | 5 | Half | 15 kV | 250kbps | 32 | Yes | Open | --- | DIP, SOIC | $1.27 | RS-422, RS-485 |
| ADM4854 | +4.75 | 5 | Full | --- | 115kbps | 256 | No | Open, Short | --- | SOIC | $0.71 | RS-422, RS-485 |
| ADM4855 | +4.75 | 5 | Full | --- | 500kbps | 256 | No | Open, Short | --- | SOIC | $0.71 | RS-422, RS-485 |
| ADM4856 | +4.75 | 5 | Full | --- | 2.5Mbps | 256 | No | Open, Short | --- | SOIC | $0.71 | RS-422, RS-485 |
| ADM4857 | +4.75 | 5 | Full | --- | 10Mbps | 256 | No | Open, Short | --- | SOIC | $0.71 | RS-422, RS-485 |
| ADM4850 | +4.75 | 5 | Half | --- | 115kbps | 256 | Yes | Open, Short | --- | CSP, MSOP, SOIC | $0.71 | RS-422, RS-485 |
| ADM487E | +4.75 | 5 | Half | 15 kV | 250kbps | 128 | Yes | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM483 | +4.75 | 5 | Half | --- | 250kbps | 32 | Yes | Open | --- | SOIC | $0.67 | RS-422, RS-485 |
| ADM4851 | +4.75 | 5 | Half | --- | 500kbps | 256 | Yes | Open, Short | --- | CSP, SOIC | $0.71 | RS-422, RS-485 |
| ADM1487E | +4.75 | 5 | Half | 15 kV | 2.5Mbps | 128 | Yes | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM485E | +4.75 | 5 | Half | 15 kV | 2.5Mbps | 32 | Yes | Open | --- | SOIC | $1.32 | RS-422, RS-485 |
| ADM4852 | +4.75 | 5 | Half | --- | 2.5Mbps | 256 | Yes | Open, Short | --- | CSP, SOIC | $0.71 | RS-422, RS-485 |
| ADM485 | +4.75 | 5 | Half | --- | 5Mbps | 32 | Yes | Open | --- | DIP, SOIC, SOP | $1.31 | RS-422, RS-485 |
| ADM4853 | +4.75 | 5 | Half | --- | 10Mbps | 256 | Yes | Open, Short | --- | CSP, SOIC | $0.71 | RS-422, RS-485 |
| ADM1486 | +4.75 | 5 | Half | --- | 30Mbps | 50 | Yes | Open | --- | SOIC | $2.07 | RS-422, RS-485 |
| ADM1485 | +4.75 | 5 | Half | --- | 30Mbps | 32 | Yes | Open | --- | DIP, SOIC, SOP | $1.63 | RS-422, RS-485 |
Table Default Sort is Power Supply (Ascending) then Full/Half Duplex Ascending
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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