| MCP23016 | 2.0 - 5.5 | I²C™ | 400 | 28/QFN28/SOIC 300mil28/SPDIP28/SSOP 208mil |
| MCP23017 | 1.8 - 5.5 | I²C™ | 1700 | 28/QFN28/SOIC 300mil28/SPDIP28/SSOP 208mil |
| MCP23018 | 1.8 - 5.5 | I²C™ | 3400 | 24/QFN24/SSOP 208mil28/SOIC 300mil28/SPDIP |
| MCP23008 | 1.8 - 5.5 | I²C™ | 1700 | 18/PDIP18/SOIC 300mil20/QFN20/SSOP 208mil |
| MCP23009 | 1.8 - 5.5 | I²C™ | 3400 | 16/QFN18/PDIP18/SOIC 300mil20/SSOP 208mil |
| MCP23S17 | 1.8 - 5.5 | SPI | 10000 | 28/QFN28/SOIC 300mil28/SPDIP28/SSOP 208mil |
| MCP23S18 | 1.8 - 5.5 | SPI | 10000 | 24/QFN28/SOIC 300mil28/SPDIP |
| MCP23S08 | 1.8 - 5.5 | SPI | 10000 | 18/PDIP18/SOIC 300mil20/QFN20/SSOP 208mil |
| MCP23S09 | 1.8 - 5.5 | SPI | 10000 | 16/QFN18/PDIP18/SOIC 300mil |
