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MAX4505 - Fault-Protected / High-Voltage / Signal-Line Protector

General Description

The MAX4505 is a single signal-line protector featuring a fault-protected input and Rail-to-Rail® signal handling capability.

The input is protected from overvoltage faults up to ±36V with power on or ±40V with power off.

Key Features

  • o Overvoltage Protection ±40V with Power Off ±36V with Power On o Open Signal Paths with Power Off o Output Clamps to Either Rail with an Input Overvoltage o 100Ω max On-Resistance o 10ns Overvoltage Turn-On Delay o No Latchup During Power Sequencing o Rail-to-Rail Signal Handling o 500Ω Output Clamp Resistance During Overvoltage o Tiny 5-Pin SOT23 Package MAX4505.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1514; Rev 0; 7/99 Fault-Protected, High-Voltage, Signal-Line Protector General Description The MAX4505 is a single signal-line protector featuring a fault-protected input and Rail-to-Rail® signal handling capability. The input is 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, while the switch output (AOUT) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures an unambiguous rail-to-rail output when a fault begins and ends. The MAX4505 protects both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies.