Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up

The PCA9554B and PCA9554C are low-voltage 8-bit General Purpose Input/Output(GPIO) expanders with interrupt for I²C-bus/SMBus applications. The only differencebetween the PCA9554B and PCA9554C is their I²C fixed address allowing a largernumber of the same device on the I²C-bus with no chance of addr I² C-bus to parallel port expander\nOperating power supply voltage range of 1.65 V to 5.5 V\nLow standby current consumption:1.5 μA (typical at 5 V VDD)\n1.0 μA (typical at 3.3 V VDD)\nSchmitt-trigger action allows slow input transition and better switching noise immunityat the SCL and SDA inputs:Vh;

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8-bit I2C-bus and SMBus I/O port with interrupt

The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/ • Operating power supply voltage range of 2.3 V to 5.5 V\n• 5 V tolerant I/Os\n• Polarity Inversion register\n• Active LOW interrupt output\n• Low standby current\n• Noise filter on SCL/SDA inputs\n• No glitch on power-up\n• Internal power-on reset\n• 8 I/O pins which default to 8 inputs\n• 0 Hz to ;

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8-bit I2C-bus and SMBus I/O port with interrupt

The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the 恩XP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/ • Operating power supply voltage range of 2.3 V to 5.5 V\n• 5 V tolerant I/Os\n• Polarity Inversion register\n• Active LOW interrupt output\n• Low standby current\n• Noise filter on SCL/SDA inputs\n• No glitch on power-up\n• Internal power-on reset\n• 8 I/O pins which default to 8 inputs\n• 0 Hz to ;

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