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   16-Bit I/O Expander with Open-Drain Outputs  
 
  
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.) 
 
 
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