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MAX4506, MAX4507
故障保护、高电压信号线路保护器


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概述
完整的数据资料 (PDF, 1.1MB)
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The MAX4506/MAX4507 multiple, two-terminal signal-line protectors are pin-compatible with the industry-standard MAX366/MAX367. These new circuit protectors feature fault-protected inputs and rail-to-rail signal handling capability. The input pins are protected from overvoltage faults up to ±36V with power on or ±40V with power off. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from the source; but the switch output (OUT_) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends.

The MAX4506 contains three independent protectors while the MAX4507 contains eight independent protectors. They can protect both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies.

These devices have no logic control inputs; the protectors are designed to be always-on when the supplies are on. On-resistance is 100Ω max and matched within 7Ω , and on-leakage is less than 0.5nA at TA = +25°C. The MAX4506 is available in 8-pin SO/DIP packages. The MAX4507 is available in 20-pin SSOP and 18-pin SO/DIP packages.

关键特性   应用/使用
  • Overvoltage Protection
    • ±40V with Power Off
    • ±36V with Power On
  • Open Signal Paths with Power Off
  • Output Clamps to Either Rail with an Input Overvoltage
  • Any On Channel Output is Not Affected by an Overvoltage to Any Other Channel
  • 100Ω max On-Resistance
  • 10ns Overvoltage Turn-On Delay
  • No Latchup During Power Sequencing
  • Rail-to-Rail Signal Handling
  • 500Ω Output Clamp Resistance During Overvoltage

 
  • 自动测试设备(ATE)
  • 数据采集系统
  • 热插拔板/系统
  • 过程控制系统
  • 冗余/备份系统
  • 高灵敏度仪表

    Key Specifications:  Signal-Line Protectors
    Part Number Functions Signal Path Leakage
    (±nA)
    ΔRON Features VSUPPLY
    (V)
    VSUPPLY (Dual)
    (±V)
    RON
    (Ω)
    Fault Protect.
    (±V)
    Package/Pins Smallest Available Pckg.
    (mm2)
    Price
    max Dual max max w/pins See Notes
    MAX4506  3-Line 20 10 Automatic Protection 9.0 to 36.0 8 to 18 100 40
    CDIP(N)/8
    PDIP(N)/8
    SOIC(N)/8
    31 $1.61 @1k
    MAX4507  8-Line
    PDIP(N)/18
    SOIC(W)/18
    SSOP/20
    58 $2.32 @1k
    查看所有Signal-Line Protectors (6)

    图表
    MAX4506、MAX4507:典型工作电路
    典型工作电路

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    参考文献: 19-1415; Rev. 2; 2003-04-02
    本页最后一次更新: 2007-06-04


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