74LS161 DATASHEET PDF

These synchronous, presettable counters feature an inter- nal carry look-ahead for application in high-speed counting designs. The DM74LSA and. 74LS Synchronous 4-bit Binary Counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed. System Logic Semiconductor 74LS datasheet, Synchronous 4 Bit Counters; Binary/ Direct Reset (3-page), 74LS datasheet, 74LS pdf, 74LS

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Functional operation should be restricted to the Recommended Operating Conditions.

This mode of operation eliminates the output counting spikes that. The ripple carry output datawheet enabled. The carry look-ahead datashet provides for cascading counters for n-bit synchronous applications without additional gating. This counter is fully programmable; that is the outputs may be preset to either level.

Low Level Input Current. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change conicident with each other when so instructed by the count-enable inputs and internal gating. Synchronous 4 Bit Counters; Binary.

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74LS Datasheet(PDF) – Fairchild Semiconductor

The ripple carry output thus enabled will produce a high-level output pulse with a duration approximately equal to the high level portion of the Q.

Low Level Input Voltage. Instrumental in accomplishiing this function are two counter-enable inputs and a ripple carry output. Instrumental in accomplishiing this function are two counter-enable inputs and 774ls161 ripple carry output. Propagation Delay, Clock to Ripple carry.

Fairchild Semiconductor

This synchronous, presettable counter features an internal carry. Propagation Delay, Enable T to Ripple carry. Width of reset pulse.

Carry Output for n-Bit Cascading. Not more than one output should be shorted at a time, and the duration should not exceed one second. Search field Part name Part description. The carry look-ahead circuitry provides for cascading counters for.

The high-level overflow ripple carry pulse can be enable successive cascaded stages. Synchronous operation is provided by having all flip-flops clocked.

Fairchild Semiconductor – datasheet pdf

Internal Look-Ahead for Fast Counting. This counter is fully programmable; that is the outputs may be. High Level Input Current. A buffered clock input triggers the four flip-flops on the rising positive- going edge of the clock input wave form.

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High Level Output Voltage. Data or enable P. Synchronous operation is provided by having all flip-flops clocked simultaneously eatasheet that the outputs change conicident with each other when so instructed by the count-enable inputs and internal gating. Sequence illustrated in waveforms: Propagation Delay, Clock load input low to Any Q. Output Short Circuit Current.

Maximum Ratings are those values beyond which damage to the device may occur. This mode of operation eliminates the output counting spikes that. This synchronous, presettable counter features an internal carry. High Level Output Current. 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 dstasheet inputs.