絲?。?a target="_blank" title="Marking" href="/pd554a/marking.html">PD554A；Package：VQFN(RGV)；PCA9554A Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output and Configuration Registers

1 Features ? I2C to Parallel Port Expander ? Open-Drain Active-Low Interrupt Output ? Operating Power-Supply Voltage Range of 2.3 V to 5.5 V ? 5-V Tolerant I/Os ? 400-kHz Fast I2C Bus ? Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus ? Input/Output Configuration Reg

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

DESCRIPTION The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C/SMBus applications and were developed to enhance the Philips family of I C I/O expanders. The improvements include higher drive capability, 5V I/O t

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