MCP23S09 Series

8-Bit SPI I/O Expander with Open-Drain Output

Catalog

8-Bit SPI I/O Expander with Open-Drain Output

Part	Current - Output Source/Sink	Interface	Package / Case [y]	Package / Case [y]	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Clock Frequency	Supplier Device Package	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Number of I/O	Package / Case [x]	Package / Case [x]
Microchip Technology MCP23S09T-E/SO	25 mA	SPI	0.295 in	7.5 mm	18-SOIC	1.8 V	5.5 V	10 MHz	18-SOIC	Surface Mount	125 °C	-40 °C	Open Drain	8
Microchip Technology MCP23S09-E/SO	25 mA	SPI	0.295 in	7.5 mm	18-SOIC	1.8 V	5.5 V	10 MHz	18-SOIC	Surface Mount	125 °C	-40 °C	Open Drain	8
Microchip Technology MCP23S09-E/P	25 mA	SPI			18-DIP	1.8 V	5.5 V	10 MHz	18-PDIP	Through Hole	125 °C	-40 °C	Open Drain	8	0.3 in	7.62 mm

Catalog

8-Bit SPI I/O Expander with Open-Drain Output

Key Features

• * I/O pins default to input

• * 5.5V tolerant

• * 25 mA sink

• * 200 mA total

• * Low standby current as low as 1 µA

• * High-speed SPI interface at 10 MHz

• * Configurable interrupt output pins: Configurable as active-high, active-low or open-drain

• * Configurable interrupt source: Interrupt-on-change from configured defaults or pin change

• * Polarity inversion register to configure the polarity of the input port data

• * External reset input

Description

MCP23S09 is an 8-bit I/O expander with SPI interface operating at 10 MHz. The MCP23S09 is available in 18-pin PDIP (300 mil), 18-pin SOIC (300 mil) and 16-pin 3x3mm QFN package