- Reliable spring cage wire to board connectors
- Pluggable power and I2C connector
- Indicator LEDs to display IO state for input or output
- Selectable address to enable connecting 8 devices to same bus
- Functions the same as MCP23017
- Possibility for pull up resistors (recommended to pull up at host)
- Operation even down to 1.8 V (LED operation down to 2.5 V)
With many options for MCP23017 break out board available, there are few with proper wire to board connectors.
Spring cage connectors (Phoenix Contact 1990025) keep 20 - 26 AWG or 0.14 - 0.5 mm² wires securely in place.
Power and I2C connector can be un-plugged for troubleshooting purposes.
Mounts to standard 35 mm DIN rail and 30 mm C-rail.