Synchronous UP/Down Decade Counter

This synchronous presettable decade Counter HD74HC669 , HD74HC668 features an internal carry look-ahead for cascading in high-speed counting applications. Synchronous operation is provided by having all Flip-Flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation helps eliminate the output counting spikes that are normally associated with asynchronous (ripple-clock) Counters By Renesas Technology
HD74HC668 's PackagesHD74HC668 's pdf datasheet
HD74HC669P
HD74HC669FPEL SOP
HD74HC668RPEL SOP
HD74HC669RPEL SOP
HD74HC669




HD74HC668 Pinout, Pinouts
HD74HC668 pinout,Pin out
This is one package pinout of HD74HC668,If you need more pinouts please download HD74HC668's pdf datasheet.

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