PCAL6534EV-ARD,34-BIT GPIO ARDUINO SHIELD
PCAL6534EVJ,IC XPNDR 1MHZ I2C 42VFBGA
PCAL9535AHF,128,IC XPNDR 400KHZ I2C 24HWQFN
PCAL9535APW,118,IC XPND 400KHZ I2C SMBUS 24TSSOP
PCAL9538ABS,128,IC XPNDR 400KHZ I2C 16HVQFN
PCAL9538APWJ,IC XPND 400KHZ I2C SMBUS 16TSSOP