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DM8556

Part Number	DM8556
Manufacturer	National Semiconductor
Description	TRI-STATE Programmable Binary Counters
Published	Nov 23, 2005
Detailed Description	DM7556 DM8556 TRI-STATE Programmable Binary Counters August 1989 DM7556 DM8556 TRI-STATE Programmable Binary Counters ...
Datasheet	DM8556 PDF File

Overview

DM7556 DM8556 TRI-STATE Programmable Binary Counters August 1989 DM7556 DM8556 TRI-STATE Programmable Binary Counters General Description These circuits are synchronous edge-sensitive fully-programmable 4-bit counters The counters feature both conventional totem-pole and TRI-STATE outputs such that when the outputs are in the high impedance mode they can be used to enter data from the bus lines In addition the clear input operates completely independent of all other inputs During the programming operation data is loaded into the flip-flops on the positive-going edge of the clock pulse To facilitate cascading of these counters the MAX COUNT output can be tied directly into the count enable ...

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