I'm using a SN74CB3T3245 switch as a bus isolation device, and I have it powered at 3.6V. If I tie a 100Kohm pulldown resistor at the output of one of the switches (this particular switch is an 8-bit switch), I only see 2.4V at the output when I drive the input high (3.3V, CMOS driven). If I remove the 100Kohm pulldown, then I see ~3.5V at the output.
In short, the device seems to behave correctly without a pulldown resistor, but doesn't behave correctly with one. Anybody have any ideas?