MCP23017-E/SO
by MICROCHIP(美国微芯)
When a controller needs additional digital connections for switches, indicators, or other board signals, Microchip's MCP23017-E/SO provides I/O expansion over I2C. It lets a design manage external digital I/O through a serial interface, making it useful in control panels and peripheral boards. This entry covers the SOIC-28 package with a 28-pin KiCad symbol and the 28-pad footprint SOIC-28_L18.0-W7.5-P1.27-LS10.3-BL. The free downloadable set includes a 3D model as well. Practical verification history comes from 3 ProtoFlow engineers using the conversion in real designs. Bring it into the editor by opening the part directly in ProtoFlow.
Download KiCad files
Use MCP23017-E/SO in your design
ProtoFlow is a free, AI-native EDA tool. Drop this part onto a schematic, route a PCB, and let the AI copilot help. The symbol, footprint, and 3D model come in linked and ready.
Free to start. macOS, Windows and Linux. No sign-up to try.
