3 ms·
I had not heard of ECL before. Thank you for popping in with this.
by cptnapalm 7y ago
I had not heard of ECL before. Thank you for popping in with this.
- bonzini 7y agoThese days ECL lives on as CML, which is similar and mostly used for signal transmission. It's very fast so HDMI uses it. Some crypto circuits use CML logic too, because it's less susceptible to side channel attacks.
- dfox 7y agoAlmost all modern fast serial interfaces are descended from ECL. Often with a twist that while receiver is ECL/CML-style long-tailed pair (which is the obvious implementation of comparator), the transmit side is normal CMOS totem-pole output stage coupled with some passive network to produce right voltage levels (and right output impedance).
- analognoise 7y agoWait, what? You can do a MOS long-tail pair just fine, can't you? Similarly for a totem pole with BJTs. They're topological circuit constructions that work for either family - aren't they?