PCA9506—带有中断、使能、复位的40位I2C IO口

The PCA9506 provides 40-bit parallel input/output (I/O) port expansion for I2C-bus

applicaTIons organized in 5 banks of 8 I/Os. At 5 V supply voltage, the outputs are capable

of sourcing 10 mA and sinking 15 mA with a total package load of 600 mA to allow direct

driving of 40 LEDs. Any of the 40 I/O ports can be configured as an input or output. Output

ports are totem-pole and their logic state changes at the Acknowledge (bank change).