Abbie said:
Is bipolar and ttl the same thing,
is mosfet, cmos, mos, fet the same thing ?
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The orignal plain, S, and 74-series LS TTL logic family was bipolar,
because bipolar means bipolar transistors, which are ONLY the NPN
and PNP type, with an emitter, base, and collector.
FETs are field-effect transistors, MOSFETs are the common type, and
CMOS is the logic family made with MOSFETS. MOSFETs have a source,
gate, and drain that correspond to some degree to the bipolar EBC,
but function a bit differently, operating by gate voltage rather
than base current to regulate a major current in the collector-emitter
path or drain-source path. The two types, enhancement and depeletion
mode, correspond roughly to NPN and PNP.
-Steve