MCP23018 is a 16-bit I/O expander for high speed I2C™Compatible interface. MCP23018 is available in the following packages: 28-pin PDIP (300 mil,)28-pin SOIC (300 mil), 24-pin SSOP, 24-pin QFN (4x4)
Parameter Name Value
Device Description 16-bit I/O Port Expander
Operating Voltage Range (V) 1.8 to 5.5
Operating Temp Range (°C) -40 to 125
Interface I²C™
Max. Bus Frequency (kBits/s) 3400
Features
16-bit remote bidirectional I/O port
Open-drain outputs:
- 5.5V tolerant
- 25 mA sink capable
- 400 mA total current out
High-speed I2C™ interface up to 3.4 MHz
Single hardware address pin: Voltage input to allow up to eight devices on the bus
Configurable interrupt output pins: active-high, active-low or open-drain
Low standby current:1 μA (typ.)
