PCA9557 series datasheets. Manufacturer: Philips Semiconductors.

PCA9557D 8 bit I2C and SMBus I/O port with reset in 16-pin SO package. Operational temperature range from -40°C to 85°C. Datasheet*) PCA9557PW 8 bit I2C and SMBus I/O port with reset in 16-pin TSSOP package. Operational temperature range from -40°C to 85°C. Datasheet*) PCA9557 8-bit I2C and SMBus I/0 port with reset Datasheet*) There are other manufacturers for this components. For more information please check PCA9557 (Texas Instruments)

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