SPX3940T-3.3V SPX3940T-5.0 SPX3940T-5.0/TR SPX3940T-L-1.8/TR SPX3940T-L-1-8/TR SPX3940T-L-2.5 SPX3940T-L-3.3 SPX3940T-L-3-3 SPX3940T-L-3-3/MTR SPX3940T-L-3-3/TR