| MCP23016 | 2.0 - 5.5 | I²C™ | 400 | 28/QFN28/SOIC 300mil28/SSOP 208mil28/SPDIP |
| MCP23017 | 1.8 - 5.5 | I²C™ | 1700 | 28/QFN28/SOIC 300mil28/SSOP 208mil28/SPDIP |
| MCP23018 | 1.8 - 5.5 | I²C™ | 3400 | 24/QFN24/SSOP 208mil28/SOIC 300mil28/SPDIP |
| MCP23008 | 1.8 - 5.5 | I²C™ | 1700 | 20/QFN18/SOIC 300mil20/SSOP 208mil18/PDIP |
| MCP23009 | 1.8 - 5.5 | I²C™ | 3400 | 18/SOIC 300mil20/SSOP 208mil16/QFN18/PDIP |
| MCP23S17 | 1.8 - 5.5 | SPI | 10000 | 28/QFN28/SOIC 300mil28/SSOP 208mil28/SPDIP |
| MCP23S18 | 1.8 - 5.5 | SPI | 10000 | 24/QFN28/SOIC 300mil28/SPDIP |
| MCP23S08 | 1.8 - 5.5 | SPI | 10000 | 20/QFN18/SOIC 300mil20/SSOP 208mil18/PDIP |
| MCP23S09 | 1.8 - 5.5 | SPI | 10000 | 18/SOIC 300mil16/QFN18/PDIP |
