DM54ALS390 counters equivalent, dual 4-bit decade counters.
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Switching specifications at 50 pF Switching specifications guaranteed over full temperature and VCC range Advanced oxide-isolated ion-implanted Schottky TTL.
Each of these monolithic counters contains eight masterslave flip-flops and additional gating to implement two independent four bit counters in a single package To use their maximum count length the B input is connected to the QA output The input cou.
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