2 ms·
All About CMOS, ECL, and TTL Propagation Delay in High Speed PCBs (2021)
- sposeray 3y ago[dead]
- peter_d_sherman 3y agoRelated: http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/logfam.html http://hyperphysics.phy-astr.gsu.edu/hbase/Electronic/logfam... https://en.wikipedia.org/wiki/Category:Logic_families https://en.wikipedia.org/wiki/Category:Logic_families http://simh.trailing-edge.com/semi/raven.html http://simh.trailing-edge.com/semi/raven.html >"From 1975, with the introduction of the KL10, until 1991, when NVAX was released, the highest performance processors at DEC were built with ECL (emitter coupled logic) technology. Fast, hot, and not very dense, ECL was the technology of choice for high-end systems, not just at DEC, but at computer companies world-wide. Then, in the space of just a few short years, it became obsolete. In 1985, DEC's ECL systems were 7 times faster than the fastest CMOS systems. In 1992, they were no faster."