What is the difference between the ADG3308 and the ADG3308-1?
The ADG3308 is a bidirectional level translator containing eight bidirectional channels. The ADG3308 can be used in multivoltage digital system applications...
ADG3308 on Analog.com
There are two differences between the ADG3308 and the ADG3308-1: the package in which the device is available and the supply rail to which the EN pin VIH and VIL are referenced to.
The ADG3308 is available in 20 lead TSSOP and LFCSP packages while the ADG3308-1 is only available in a 20 ball WLCSP package. The EN pin VIL and VIH are referenced to the VCCY supply rail on the ADG3308 and the VCCA supply rail on the ADG3308-1.