SN54LS669 - SYNCHRONOUS 4-BIT UP/DOWN COUNTER

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Motorola Inc

Part number	SN54LS669
Manufacturer	Motorola Inc
File Size	213.91 KB
Description	SYNCHRONOUS 4-BIT UP/DOWN COUNTER
Datasheet	SN54LS669 Datasheet
Additional preview pages of the SN54LS669 datasheet.

an internal carry lookahead for cascading purposes. By clocking all flip-flops simultaneously so the outputs change coincident with each other (when instructed to do so by the count enable inputs and internal gating) synchronous operation is provided. This helps to eliminate output counting spikes, normally associated with asynchronous (ripple-clock) counters. The four master-slave flip-flops are triggered on the rising (positive-going) edge of the clock waveform by a buffered clock input. Circu.

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Published: Apr 16, 2005 |