This application note introduces Fairchild's LVX low voltage dual supply CMOS translating transceivers
Fairchild Semiconductor's LVX Low Voltage Dual Supply CMOS Translating Transceivers (74LVX3245, 74LVX4245, 74LVXC3245, and 74LVXC4245) are designed to interface between 3 volt and 5 volt logic systems. These true voltage translating devices electrically isolate the A-side from the B-side to ensure clean signal translation.
These devices are designed to interface 3 volt signals to 5 volt signals.
The higher voltage Vcc side is able to swing from 4.5V to 5.5V.