Output from Clamp Node Erroneous?

Feeding the various RGB channels from a Texture 2D into a Clamp produces unexpected results.

STEPS:

1. Create a Texture 2D
2. Create a Clamp
3. Create a Value, set to 0
4. Create a Value, set to 1
5. Wire the R channel of the texture to the 1st Input of the Clamp
6. Wire the 0 Value to the Min input of the Clamp
7. Wire the 1 Value to the Max input of the Clamp