Minor nitpick about the voltage: How many chips at this level (at the border of micrcontroller to microprocessor) actually use more than 1.8V for internal logic? Other than a few chips that have on board power switching from 3.3V, I can't find any other CPUs, DDR3 RAM, or even CMOS cameras (720p+ chips) that don't require a 1.8V rail.
For prototyping a divider with 1% resistors would do just fine (although with some instability with a bad breadboard) and if you can't find 1.8V power parts for production you have much bigger problems. As for level translators, I've found they are almost inevitable on any design that uses enough chips and sensors.
For prototyping a divider with 1% resistors would do just fine (although with some instability with a bad breadboard) and if you can't find 1.8V power parts for production you have much bigger problems. As for level translators, I've found they are almost inevitable on any design that uses enough chips and sensors.