3 ms·
> Some differential lines (e.g. RS-485, popular in industrial automation) use current signalling thus requiring two wires per signal. Virtually all high-speed
by blattimwind 8y ago
> Some differential lines (e.g. RS-485, popular in industrial automation) use current signalling thus requiring two wires per signal.
Virtually all high-speed digital communication uses differential signalling.
- friendzis 8y agoAgree on that, but all high speed interconnects I know use voltage signalling.
- blattimwind 8y agoThat's orthogonal to differential or single ended, but typically the transmit side uses some form of current steering; it just goes well with it. E.g. PCIe transmitters are HSCL, which is a form of current steering that gives the receiver exactly the voltages it needs to see at nominal currents and termination values.