PCA9554DB集成电路（IC）的I/O扩展器规格书PDF中文资料

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 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, pushbuttons, LEDs, fans, etc.

FEATURES

•Operating power supply voltage range of 2.3 to 5.5 V

•5 V tolerant I/Os

•Polarity inversion register

•Active-LOW interrupt output

•Low stand-by 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 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 JESDEC Standard JESD78 which exceeds 100 mA

•Six packages offered: DIP16, SO16, SSOP16, SSOP20, TSSOP16, and HVQFN16