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HD74LS163A Dataheets PDF



Part Number HD74LS163A
Manufacturers Renesas
Logo Renesas
Description Synchronous 4-bit Binary Counter
Datasheet HD74LS163A DatasheetHD74LS163A Datasheet (PDF)

HD74LS163A Synchronous 4-bit Binary Counter (direct clear) REJ03D0447–0200 Rev.2.00 Feb.18.2005 This synchronous 4-bit binary counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs changes coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting spikes that are nor.

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HD74LS163A Synchronous 4-bit Binary Counter (direct clear) REJ03D0447–0200 Rev.2.00 Feb.18.2005 This synchronous 4-bit binary counter features an internal carry look-ahead for application in high-speed counting designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs changes coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input waveform. This counter is fully programmable; that is, the output may be preset to either level. As presetting is synchronous, setting up a low level at the load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse regardless of the levels of the enable inputs. Low-to-high tran.


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