Here's another one, this time on the Ethernet Shield R3. There's a reset supervisor on it, IC1, which is labeled as 'CAT811TTBI-CT3'. I'm assuming that's simply an STM811, push-pull, active low IC? Can anyone verify this please?
And what voltage should it be? They come in varying voltages: 2.59-2.66V, 2.89-2.96V, 3.04-3.11V, 4.31-4.45V, and 4.56-4.7V. Since it's ascertaining the 5V line, am I correct that it's a 4.56 - 4.7V one?