The MAX4505EUK+T is a fault protected, high voltage, signal line protector in 5 pin SOT-23 package. This single signal line protector has fault protected input and rail to rail signal handling capability. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from source while the switch output (AOUT) furnishes typically 19mA from appropriate polarity supply to load. This ensures an unambiguous rail to rail output when fault begins and ends. The MAX4505 protects both unipolar and bipolar analogue signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies. The device has no logic control inputs and protector is always on when the supplies are on. It has maximum on-resistance of 100 ohm and on-leakage of less than 0.5nA at TA = +25°C. The device is used in hot insertion boards/systems, data acquisition systems, redundant/backup systems, ATE equipment and sensitive instruments.
- No latch-up during power sequencing
- Operating temperature range from -40°C to 85°C
- Open signal paths with power off
- Output clamps to either rail with an Input overvoltage
- Overvoltage turn-on delay of 10ns
- 500 ohm output clamp resistance during overvoltage
- Power supply current of 5μA at TA = +25°C with single supply
- Fault recovery time of 2.5μs at TA = +25°C with single supply
- Input is protected from overvoltage faults up to ±36V with power-on or ±40V with power-off
安全, 自动化与过程控制
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