Two triodes with the cathodes coupled together to form a differential pair.
However, the use of the extra three differential pairs is reserved as of 1.3 specification.
The camera link standard calls for these 28 bits to be transmitted over 4 serialized differential pairs with a serialization factor of 7.
Each signal is a differential pair, so the total number of pins is 84.
Since the noise is common-mode, shielding has very little effect, even with differential pairs.
This creates a balanced audio circuit with common-mode rejection also known as a differential pair.
With a differential pair of wires, roughly the same unwanted voltage is induced in each wire.
Transmit and receive are separate differential pairs, for a total of four data wires per lane.
However, a differential pair of sensors cannot measure temperature in this configuration, and therefore is only useful for motion detection.
These four differential pairs are carrying the same information previously transferred over 22 wires, which is almost a 65% wire reduction.