MM74HC191 counters equivalent, synchronous binary up/down counters.
Y Level changes on Enable or Down Up can be made regardless of the level of the clock input
Y Wide power supply range 2
– 6V Y Low quiescent supply curren.
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 reve.
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