74LS163 DATASHEET PDF

These synchronous presettable counters feature an inter- nal carry look-ahead for application in high-speed counting designs The LSA and LSA are. SN74LSADR. SOIC. D. Q1. SN74LSANSR. SO. NS. Q1. Texas Instruments 74LS Counter ICs are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments 74LS

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Synchronous operation is pro. These counters feature a fully independent clock circuit. These counters datsaheet fully programmable; that is, the outputs. Fairchild Semiconductor Electronic Components Datasheet. These synchronous, presettable counters feature an inter. As presetting is synchronous. The carry output is decoded by means of a NOR gate, thus preventing spikes during the normal counting mode of operation.

Instrumental in accomplishing this function are two count-enable inputs and a ripple carry output.

A buffered clock input triggers the four flip-flops on the rising positive-going edge of the clock input waveform. View PDF for Mobile.

74LS Datasheet(PDF) – TI store

This mode of operation eliminates the output counting spikes which are normally associated with asynchronous ripple clock counters. Instrumental in accomplishing this function.

Synchronous 74ls16 Binary Counters. Order Number Package Number. The clear function for the DM74LSA is asynchro- nous; and a low level at the clear input sets all four of the flip-flop outputs LOW, regardless of the levels 74ls136 clock, load, or enable inputs.

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The clear function for the DM74LSA is synchronous; and a low level at the clear inputs sets all four of the flip-flop outputs LOW after the next clock pulse, regardless of the levels of the enable inputs. This mode of operation eliminates the output counting.

As presetting is satasheet, 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 input.

(PDF) 74LS163 Datasheet download

The carry look-ahead circuitry provides for cascading. The ripple carry output thus enabled will produce a high.

The gate output is connected to the clear input to synchronously clear the counter to all low outputs. This high-level over- flow ripple carry pulse can datashheet used to enable successive cascaded stages. The gate output is connected to the clear input to.

Changes datasjeet to control inputs enable P or T or load that. DM74LSA is synchronous; and a low level at the clear. These counters are fully programmable; that is, the outputs may be preset to either level. The function of the counter whether enabled, dis- abled, loading, or counting will be dictated solely by the conditions meeting the stable set-up and hold times.

A buffered clock input triggers the. Features s Synchronously programmable s Internal look-ahead for fast counting s Carry output for n-bit cascading s Synchronous counting s Load control line s Diode-clamped inputs s Typical propagation time, clock to Q output 14 ns s Typical clock frequency 32 MHz s Typical power dissipation 93 mW Ordering Code: 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 A output.

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Devices also available in Tape and Reel. The function of the counter whether enabled, dis. This synchronous clear allows the count length to be modified easily, as decoding the maximum count desired can be accomplished with one external NAND gate. The carry output is decoded by means of. The clear function for the. The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without addi- tional gating.

Synchronous operation is pro- vided by having all flip-flops clocked simultaneously so that the outputs datashert coincident with each other when dagasheet instructed by the count-enable inputs and internal gating.

Changes made to control inputs enable P or T or load that will modify the operating mode have no effect until clocking occurs. This synchronous clear allows the count length to.