RS422/RS485接口电路
       凌力尔持提供了众多可供用户选择的工业标准、低功率 CMOS RS485 和   RS422 接口收发器,并具有适合严酷环境的高 ESD   防护、故障保险、高速和高电压版本。我们最新推出的 RS485/RS422 收发器具有一个   -40℃ 至   125℃ 的扩展工作温度范围,从而有助于在苛刻的环境条件 (常常由汽车应用造成)   中确保可靠的数据传输。选择具转换速率限制功能的型号以降低 EMI,而其他型号则包括一个可利用接收逻辑电路来选择的 120Ω 终端。所有器件均专为在采用   3.3V 或   5V 电源的系统中运作而设计,拥有一个 20Mbps 的最大数据速率,并保持一个能够支持多达 256 个节点的高输入阻抗。此外,增强型   ESD 保护可保证在高达 ±15kV HBM   的条件下不会发生损坏或闭锁现象。上述特点再加上一个很宽的操作窗口,使得这些产品成为诸多汽车应用的合适之选,包括电平变换、背板收发和低功率   RS422/RS485 收发。(39)
       
          
           | 型号 | Drivers | Receivers | Configuration | Supply Voltage | Max Data Rate | Isupply | ESD | Packages | 数据手册DataSheet下载 | 
         
           | LTC1518 | 0 | 4 | Quad Receiver | 5 | 52 | 20 | 4 | SO-16 | LTC1518 | 
         
           | LTC1519 | 0 | 4 | Quad Receiver | 5 | 52 | 20 | 4 | SO-16 | LTC1519 | 
         
           | LTC1520 | 0 | 4 | Quad Receiver | 5 | 50 | 20 | 4 | SO-16 | LTC1520 | 
         
           | LTC488 | 0 | 4 | Quad Receiver | 5 | 10 | 10 | 10 | SO-16, DIP-16 | LTC488 | 
         
           | LTC489 | 0 | 4 | Quad Receiver | 5 | 10 | 10 | 4 | SO-16, DIP-16 | LTC489 | 
         
           | LT1785 | 1 | 1 | Half-Duplex | 5 | 0.25 | 9 | 15 | SO-8, DIP-8 | LT1785 | 
         
           | LT1791 | 1 | 1 | Full-Duplex | 5 | 0.25 | 9 | 15 | SO-14, DIP-14 | LT1791 | 
         
           | LTC1480 | 1 | 1 | Half-Duplex | 3.3 | 2.5 | 0.5 | 10 | SO-8, DIP-8 | LTC1480 | 
         
           | LTC1481 | 1 | 1 | Half-Duplex | 5 | 2.5 | 0.5 | 10 | SO-8, DIP-8 | LTC1481 | 
         
           | LTC1482 | 1 | 1 | Half-Duplex | 5 | 4 | 0.7 | 15 | MS-8, SO-8, DIP-8 | LTC1482 | 
         
           | LTC1483 | 1 | 1 | Half-Duplex | 5 | 0.15 | 0.5 | 10 | SO-8, DIP-8 | LTC1483 | 
         
           | LTC1484 | 1 | 1 | Half-Duplex | 5 | 4 | 0.9 | 15 | MS-8, SO-8, DIP-8 | LTC1484 | 
         
           | LTC1485 | 1 | 1 | Half-Duplex | 5 | 10 | 3.5 | 4 | SO-8, DIP-8 | LTC1485 | 
         
           | LTC1487 | 1 | 1 | Half-Duplex | 5 | .25 | 0.2 | 10 | SO-8, DIP-8 | LTC1487 | 
         
           | LTC1535 | 1 | 1 | Full-Duplex | 5 | 0.35 | 13 | 8 | SO-28 | LTC1535 | 
         
           | LTC1685 | 1 | 1 | Half-Duplex | 5 | 52 | 12 | 4 | SO-8 | LTC1685 | 
         
           | LTC1686 | 1 | 1 | Full-Duplex | 5 | 52 | 12 | 4 | SO-8, SO-14 | LTC1686 | 
         
           | LTC1687 | 1 | 1 | Full-Duplex | 5 | 52 | 12 | 4 | SO-8, SO-14 | LTC1687 | 
         
           | LTC1690 | 1 | 1 | Full-Duplex | 5 | 5 | 0.6 | 15 | MS-8, SO-8, DIP-8 | LTC1690 | 
         
           | LTC2850 | 1 | 1 | Half-Duplex | 3.3 | 20 | 0.66 | 15 | DFN-8, MS-8, SO-8 | LTC2850 | 
         
           | LTC2851 | 1 | 1 | Full-Duplex | 3.3 | 20 | 0.66 | 15 | DFN-8, MS-8, SO-8 | LTC2851 | 
         
           | LTC2852 | 1 | 1 | Full-Duplex | 3.3 | 20 | 0.66 | 15 | DFN-10, MS-10, SO-14 | LTC2852 | 
         
           | LTC2854 | 1 | 1 | Half-Duplex | 3.3 | 20 | 0.66 | 15 | DFN-10 | LTC2854 | 
         
           | LTC2855 | 1 | 1 | Full-Duplex | 3.3 | 20 | 0.66 | 15 | DFN-12, SSOP-16 | LTC2855 | 
         
           | LTC2856-1 | 1 | 1 | Half-Duplex | 5 | 20 | 0.54 | 15 | DFN-8, MS-8 | LTC2856-1 | 
         
           | LTC2856-2 | 1 | 1 | Half-Duplex | 5 | .25 | 0.54 | 15 | DFN-8, MS-8 | LTC2856-2 | 
         
           | LTC2857-1 | 1 | 1 | Half-Duplex | 5 | 20 | 0.54 | 15 | DFN-8, MS-8 | LTC2857-1 | 
         
           | LTC2857-2 | 1 | 1 | Half-Duplex | 5 | .25 | 0.54 | 15 | MS-8, DFN-8 | LTC2857-2 | 
         
           | LTC2858-1 | 1 | 1 | Half-Duplex | 5 | 20 | 0.54 | 15 | MS-10, DFN-10 | LTC2858-1 | 
         
           | LTC2858-2 | 1 | 1 | Half-Duplex | 5 | .25 | 0.54 | 15 | DFN-10, MS-10 | LTC2858-2 | 
         
           | LTC2859 | 1 | 1 | Half-Duplex | 5 | 20 | 0.67 | 15 | DFN-10 | LTC2859 | 
         
           | LTC2861 | 1 | 1 | Full-Duplex | 5 | 20 | 0.9 | 15 | DFN-12, SSOP-16 | LTC2861 | 
         
           | LTC485 | 1 | 1 | Half-Duplex | 5 | 2.5 | 0.5 | 4 | SO-8, N-8 | LTC485 | 
         
           | LTC490 | 1 | 1 | Full-Duplex | 5 | 2.5 | 0.5 | 10 | SO-8, DIP-8 | LTC490 | 
         
           | LTC491 | 1 | 1 | Full-Duplex | 5 | 2.5 | 0.5 | 10 | SO-14, DIP-14 | LTC491 | 
         
           | LTC1688 | 4 | 0 | Quad Driver | 5 | 100 | 18 | 4 | SO-16 | LTC1688 | 
         
           | LTC1689 | 4 | 0 | Quad Driver | 5 | 100 | 18 | 4 | SO-16 | LTC1689 | 
         
           | LTC486 | 4 | 0 | Quad Driver | 5 | 10 | 0.15 | 4 | SO-16, DIP-16 | LTC486 | 
         
           | LTC487 | 4 | 0 | Quad Driver | 5 | 10 | 0.15 | 4 | SO-16, DIP-16 | LTC487 |