MCP23S17
	16-Bit I/O Expander with Serial Interface
	
Features
	• 16-bit remote bidirectional I/O port
	- I/O pins default to input
	• High-speed I2C™ interface (MCP23017)
	- 100 kHz
	- 400 kHz
	- 1.7MHz
	• High-speed SPI interface (MCP23S17)
	- 10 MHz (max.)
	• Three hardware address pins to allow up to eightdevices on the bus
	• Configurable interrupt output pins
	- Configurable as active-high, active-low oropen-drain
	• INTA and INTB can be configured to operateindependently or together
	• Configurable interrupt source
	- Interrupt-on-change from configured registerdefaults or pin changes
	• Polarity Inversion register to configure the polarityof the input port data
	• External Reset input
	• Low standby current: 1 μA (max.)
	• Operating voltage:
	- 1.8V to 5.5V @ -40°C to +85°C
	- 2.7V to 5.5V @ -40°C to +85°C
	- 4.5V to 5.5V @ -40°C to +125°C
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