MM54HCT191 counters equivalent, (mm54hct190 / mm54hct191) synchronous binary up/down counters.
Y Y
Y Y
Level changes on Enable or Down Up can be made regardless of the level of the clock Low quiescent supply current 80 mA maximum (74HCT Series) Low input current .
These high speed synchronous counters utilize advanced silicon-gate CMOS technology They possess the high noise immunity and low power consumption of CMOS technology along with the speeds of low power Schottky TTL These circuits are synchronous rever.
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