PCA9557PW,118IC I/O EXPANDER I2C 8B 16TSSOP|NXP SEMICONDUCTORS|Lead free|RoHS Compliant PCA9557PWR PCA9557PW PCA9557PW,118IC I/O EXPANDER I2C 8B 16TSSOP|NXP SEMICONDUCTORS (VA)|Lead free|RoHS Compliant PCA9557PWR PCA9557PW