Yes, this is bi-directional, although I used the wrong symbol for the MOSFET. It should have a diode in it with the cathode at the source and the anode at the drain. That diode forward biases when the 5V side goes low, pulling the 3.3V down. The GS threshold then kicks in and the whole MOSFET turns on. Even if you use a MOSFET without the internal diode, you can use a 1N60P or other Schottky diode. This circuit will work up to very high frequencies and puts no undue load on any component.
Since the DS1825 will only sink about 4 or so ma, I'm not sure the resistor voltage divider will work, but give it a try anyway. It is the least expensive method.