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TCA8418: I2C Address 0x68??

Part Number: TCA8418
Other Parts Discussed in Thread: 4428,

Trying to figure out the correct address for this part.  I have tried every address from 0x01 to 0xff and not be able to get a proper acknowledge.  I have read here that the correct address for this part is 0x68 (for a write and 0x69 for a read)

Any ideas out there that would suggest why this part will not respond?  I have tried multiple parts on different boards.  Reset and INT lines are pulled high through resistors.  Attached is a screen shot of the SDA and SCL

.4428.TEK00000.TIF