Low-voltage 16-bit I2C-bus GPIO with Agile I/O, interrupt and weak pull-up

The PCAL9555A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expanderwith interrupt and weak pull-up resistors for I²C-bus/SMBus applications. 恩XP® I/Oexpanders provide a simple solution when additional I/Os are needed while keepinginterconnections to a minimum, for example, in ACPI pow • I²C-bus to parallel port expander\n• Operating power supply voltage range of 1.65 V to 5.5 V\n• Low standby current consumption• 1.5 μA (typical at 5 V VDD)\n• 1.0 μA (typical at 3.3 V VDD)\n• Schmitt-trigger action allows slow input transition and better switching noise immunityat the SCL and SDA;

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Low-voltage 16-bit I2C-bus GPIO with Agile I/O, interrupt and weak pull-up

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