No, I read it as 7v max, not 7v min. They should work.
The circuit to connect it up would be similar to "Test circuit Detector" on the data sheet, except that the emitter resistor should be about 500 ohms (unless you are using a pulse driver, which you probably aren't) and you can experiment with increasing the detector resistor (dont decrease it below 100 ohms) until you find something that works.
If they are at close range and shielded from ambient light you might get it working on a digital pin. Otherwise you may need special pulse drivers and amplifiers and detector circuitry to get it to work reliably.