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DM74191

Part Number	DM74191
Manufacturer	National Semiconductor
Description	Synchronous Up/Down 4-Bit Binary Counter with Mode Control
Published	Apr 1, 2005
Detailed Description	54191 DM54191 DM74191 Synchronous Up Down 4-Bit Binary Counter with Mode Control June 1989 54191 DM54191 DM74191 Synch...
Datasheet	DM74191 PDF File

Overview

54191 DM54191 DM74191 Synchronous Up Down 4-Bit Binary Counter with Mode Control June 1989 54191 DM54191 DM74191 Synchronous Up Down 4-Bit Binary Counter with Mode Control General Description This circuit is a synchronous reversible up down counter The 191 is a 4-bit binary counter Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change simultaneously when so instructed by the steering logic This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters The outputs of the four master-slave flip-flops are triggered on a low-to-high level transition of the clock input if the enabl...

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