SN54/74LS is an UP/DOWN MODULO Binary Counter. Separate. Count Up and Count Down Clocks are used and in either counting mode the. datasheet, pdf, data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counter with Dual Clock. This circuit is a synchronous up down 4-bit binary counter. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs.
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A clear input has been provided which, when taken to a high level, forces all outputs to the low level; independent of the count and load inputs.
This mode of operation eliminates the output counting. The clear, count, and load inputs are buffered to lower the drive requirements of clock drivers, etc.
The output will change. The counter is fully programmable; that is, each output may be preset to either level by entering the desired data at the inputs while the load input is LOW.
Both borrow and carry outputs are available to cascade both the up and down counting functions. The clear, count, and load. The counters can then be easily cascaded by feeding the borrow and carry outputs to the count down and count up inputs respectively of the succeeding counter.
The direction of counting is determined by which. Similarly, the carry output produces a pulse equal in width to the count down input when an overflow condition exists. The direction of counting is determined by which count input is pulsed while the other count input is held HIGH. A clear input has been provided which, when taken to a.
Synchronous 4-Bit Binary Counter With Dual Clock
Similarly, the carry output produces a pulse equal in width. These counters were designed to be cascaded without the need for external circuitry.
The counters can then be easily cascaded by feeding the. The borrow output produces a pulse equal in. Fairchild Semiconductor Electronic Components Datasheet. These counters were designed to be cascaded without the. Synchronous operation is provided by hav- ing all flip-flops clocked simultaneously, so that the outputs change together when so instructed by the steering logic.
Both borrow and carry outputs. The borrow output produces a pulse equal in width to the count down input when the counter underflows.
View PDF for Mobile. This mode of operation eliminates the output counting spikes normally associated with asynchronous ripple- clock counters.
The output will change independently of the count pulses. This feature allows the counters to be used as modulo-N dividers by simply modi- fying the count length with the preset inputs.
Datasheet(PDF) – Fairchild Semiconductor
This feature allows the. Features s Fully independent clear input s Synchronous operation s Cascading circuitry provided internally s Individual preset each flip-flop 7193 Code: The outputs of the four master-slave flip-flops are triggered. The counter is fully programmable; that is, each output may. Synchronous operation is provided by hav.