PCA9538 port equivalent, 8-bit i2c and smbus low power i/o port.
* 8-bit I2C GPIO with interrupt and reset
* Operating power supply voltage range of 2.3 V to 5.5 V
* 5 V tolerant I/Os
* Polarity inversion register
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and was developed to enhance the Philips family of I2C I/O expanders. I/O expanders provides a simple solution when addi.
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