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Microchip MCP23017 16-bit I2C Port Expander IC SOIC28

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$3.45 (inc GST) $3.14 (exc GST)
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Product Description

The MCP23017 from Tronixlabs Australia allows you to add sixteen inputs or outputs (in two pairs of eight) easily to any platform with an I2C interface. You can choose from one of eight I2C bus addresses allowing use of up to eight ICs in total. The MCP23017 is easy to use, and quite hardy. It is also used in the Freetronics RELAY8 shield


This is the SOIC-28 surface-mount version. Click here for the breadbaord-friendly through-hole version. 


  • 16-bit input/output port expander with interrupt output
  • Cascadable for up to 8 devices on one bus
  • 25mA sink/source capability per I/O
  • Supports 100kHz, 400kHz and 1.7MHz I2C™Compatible compatible modes

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