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The maximum operating frequency of PCA8574APW,118 is 400 kHz.
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Yes, PCA8574APW,118 can be used in 5V systems, but it is recommended to use an external voltage regulator to ensure stable operation.
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PCA8574APW,118 can expand up to 8 I/O pins.
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Yes, PCA8574APW,118 is compatible with I2C-bus and can operate as a slave device on the I2C-bus.
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The power consumption of PCA8574APW,118 is typically 2.5 μA (standby) and 1.5 mA (active).