PCA9555 port equivalent, 16-bit i2c-bus and smbus i/o port.
* Operating power supply voltage range of 2.3 V to 5.5 V
* 5 V tolerant I/Os
* Polarity Inversion register
* Active LOW interrupt output
* Low standby.
and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher dri.
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