MCP23009

In Production

MCP23009 is an 8-bit I/O expander with I2C™Compatible interface operating at speeds of up to 3.4MHz. The MCP23009 is available in 18-pin PDIP (300 mil), 18-pin SOIC (300 mil) and 20-pin SSOP packages.

Microchip Technology MCP23009 Product Info

16 April 2026 2

Parameters

Max. Bus Frequency [kBits/s]	3400
Operating Voltage [V] Max	5.5
Operating Voltage [V] Min	1.8
TempRange [°C] Max	125
TempRange [°C] Min	-40

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 I2C™ interface: 100 kHz, 400 kHz,3.4MHz
Single hardware address pin: Voltage input to allow up to eight devices on the bus
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

MCP23009 is an 8-bit I/O expander with I²C™Compatible interface operating at speeds of up to 3.4MHz. The MCP23009 is available in 18-pin PDIP (300 mil), 18-pin SOIC (300 mil) and 20-pin SSOP packages.

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MCP23009

MCP23009 is an 8-bit I/O expander with I2C™Compatible interface operating at speeds of up to 3.4MHz. The MCP23009 is available in 18-pin PDIP (300 mil), 18-pin SOIC (300 mil) and 20-pin SSOP packages.

Microchip Technology MCP23009 Product Info

Parameters

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

MCP23009

MCP23009 is an 8-bit I/O expander with I2C™Compatible interface operating at speeds of up to 3.4MHz. The MCP23009 is available in 18-pin PDIP (300 mil), 18-pin SOIC (300 mil) and 20-pin SSOP packages.

Microchip Technology MCP23009 Product Info

Parameters

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor