MCP23017-E/SS MICROCHIP I/O Expander, 16 bit, I2C, Serial, 1.8 V, 5.5 V, SSOP, 28 Pins


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SKU: 1743735
  1. Interfaces:  I2C, Serial
  2. No.of pins: 28pins
  3. No.of bits: 16bits
  4. Bus Frequency: 1.7MHz


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Brand: Microchip
Category: Interface ICs

The MCP23017-E/SS is a 16-bit I/O Expander, that provides general-purpose parallel I/O expansion for I²C bus or SPI applications. The two devices differ only in the serial interface. It consists of multiple 8-bit configuration registers for input, output, and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B). The data for each input or output is kept in the corresponding input or output register. The polarity of the Input port register can be inverted with the polarity inversion register. All registers can be read by the system master. The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB). It can be configured to operate in the 8-bit or 16-bit modes via IOCON.BANK


  1. Signal Processing
  2. Consumer Electronics


1 x MCP23017-E/SS MICROCHIP I/O Expander, 16 bit, I2C, Serial, 1.8 V, 5.5 V, SSOP, 28 Pins

SKU: 1743735 Category:
No. of Bits



I2C, Serial

IC Interface Type

I2C, Serial

Supply Voltage Max


IC Case / Package


Interface Case Style


No. of Pins


Operating Temperature Min


Operating Temperature Max


Chip Configuration


Shipping Weight 0.001 kg
Shipping Dimensions 6 × 5 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China