General description
●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 NXP Semiconductors family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.
●Features
●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 current
●Noise filter on SCL/SDA inputs
●No glitch on power-up
●Internal power-on reset
●8 I/O pins which default to 8 inputs
●0 Hz to 400 kHz clock frequency
●ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
●Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
●Packages offered: DIP16, SO16, SSOP16, SSOP20, TSSOP16, HVQFN16 (2 versions: 4×4×0.85 mm and 3×3×0.85 mm), and bare die
