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LT1780 - 典型应用图例：
LT1780典型应用图例一
LT1780典型应用图例二
LT1780 - 封装图解：
LT1780封装图解一
LT1780封装图解二
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LINEAR产品 - LT1780介绍

LT1780 - LT1780是具 ±15kV ESD 保护能力的低功率 5V RS232 双通道驱动器/接收器

LT1780是LINEAR凌力尔特公司的一款RS232 / RS562 收发器产品，LT1780是LT1780是具 ±15kV ESD 保护能力的低功率 5V RS232 双通道驱动器/接收器，本站介绍了LT1780的封装应用图解、特点和优点、功能等，并给出了与LT1780相关的LINEAR元器件型号供参考。

LT1780 - LT1780是具 ±15kV ESD 保护能力的低功率 5V RS232 双通道驱动器/接收器 - RS232 / RS562 收发器 - 接口器件 - 凌力尔特

LT1780 - 具 ±15kV ESD 保护能力的低功率 5V RS232 双通道驱动器/接收器

LT1780 - 具 ±15kV ESD 保护能力的低功率 5V RS232 双通道驱动器/接收器 - Linear Technology（凌力尔特）

功能描述
The LT1780/LT1781 are dual RS232 driver/receiver pairs with integral charge pump to generate RS232 voltage levels from a single 5V supply. Using only 0.1μF external capacitors, these circuits consume only 40mW of power, and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1780/LT1781 to survive ±15kV air gap and ±8kV contact ESD tests per IEC 1000-4-2, eliminating the need for costly TransZorbs on the RS232 line pins. The LT1780/LT1781 are fully compliant with EIA RS232 standards. Driver outputs are protected from overload, and can be shorted to ground or up to ±30V without damage. During SHUTDOWN or power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing. The LT1780/LT1781 are direct upgrades to the LT1180A/LT1181A, LT1280A/LT1281A and LT1381 for applications which require the utmost ESD protection. The LT1781 is available in 16-pin DIP,SO and SW packages. The LT1780 is supplied in 18-pin DIP and SW packages for applications which require SHUTDOWN.
特点
  • 10mA Max Supply Current
  • ESD Protection to IEC 1000-4-2 Level 4 ±15kV Air Gap, ±8kV Contact
  • Uses Small Capacitors: 0.1μF
  • 120kBaud Operation for RL = 3k, CL = 2500pF
  • 250kBaud Operation for RL = 3k, CL = 1000pF
  • Outputs Withstand ±30V Without Damage
  • CMOS Comparable Low Power: 40mW
  • Operates from a Single 5V Supply
  • Rugged Bipolar Design
  • Outputs Assume a High Impedance State When Offor Powered Down
  • Meets All RS232 Specifications
  • Available With or Without Shutdown
  • Absolutely No Latch-up
    • 应用
  • Portable Computers
  • Battery-Powered Systems
  • Power Supply Generator
  • Terminals
  • Modems
    • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LT1780CN N-18 C $3.35 $2.75
    LT1780CN#PBF N-18 C $3.35 $2.75
    LT1780CSW SW-18 C $3.65 $3.00
    LT1780CSW#PBF SW-18 C $3.65 $3.00
    LT1780CSW#TR SW-18 C $3.10
    LT1780CSW#TRPBF SW-18 C $3.10
    LT1780IN N-18 I $4.45 $3.40
    LT1780IN#PBF N-18 I $4.45 $3.40
    LT1780ISW SW-18 I $4.85 $3.70
    LT1780ISW#PBF SW-18 I $4.85 $3.70
    LT1780ISW#TR SW-18 I $3.80
    LT1780ISW#TRPBF SW-18 I $3.80
    下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
  • LT1763 - 500mA、低噪声、LDO 微功率稳压器
  • LT1761 - 采用 SOT-23 封装的 100mA、低噪声、LDO 微功率稳压器
  • LT3080 - 可调 1.1A、单电阻、低压差稳压器
  • LTM2882 - 双通道、隔离型 RS232 μModule 收发器 + 电源
  • LT5400 - 四个匹配的电阻器
  • LTM2881 - 完整的隔离型 RS485 / RS422 μModule 收发器和电源
  • LTC3115-1 - 40V、2A、同步降压-升压型 DC/DC 转换器
  • LT3015 系列 - 具精准电流限值的 1.5A、低噪声、负线性稳压器
  • LT1781 - Low Power 5V RS232 Dual Driver/Receiver with ±15kV ESD Protection
  • LT3796 - 具双电流检测的 100V 恒定电流和恒定电压控制器
    • 下面可能是您感兴趣的凌力尔特公司RS232 / RS562 收发器元器件
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