Terry Hancock wrote: > That part should be pretty trivial, just drop the numbers into this > search engine: > http://www.datasheetcatalog.com > > E.g. "74138" turns up several, including this one: > http://www.tranzistoare.ro/datasheets/90/232315_DS.pdf
JB suggested off-list that I should mention that inserted letters in 7400-series chips are usually not significant for our purposes. For example a 74LS138 is just a 74138 that uses "Low-power Schottky" implementation while a 74HC138 is one that uses "High-power CMOS". Some of them can't be used together for impedence-matching/power-consumption reasons, but they are identical at the logic and pinout level -- which is (AFAIK) all the Verilog will encode anyway. Letters at the beginning are probably manufacturer codes (I'm not certain, though). Letters at the end usually indicate package codes. When the 7400s first came out, they were all in standard 0.3" wide, 0.1" pin-pitch through-hole DIP packages. But many of these are for various "small outline" / "surface mount" packages which are a lot more compact. I'm discovering that there is a bewildering array of these, though. Anyway, they should still have the same arrangement of pins. Cheers, Terry -- Terry Hancock ([EMAIL PROTECTED]) Anansi Spaceworks http://www.AnansiSpaceworks.com _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
