4 ms·
You can still get pre-LS TTL as well! Gets a bit warm that stuff.
by cjsuk 9y ago
You can still get pre-LS TTL as well! Gets a bit warm that stuff.
- dboreham 9y agoWow. There wasn't much reason to use that in the 80s once LS and F appeared. Perhaps for Iout(max), which I seem to remember is higher for the non-LS?
- cjsuk 9y agoYes fan out is ~25 as opposed to ~10. Early TTL is still used for building oscillators, timing circuits and monostables because lots of long run products were designed with those in and the LS/HC parts aren't equivalent due to bias current etc.