Description, Synchronous Up/down Counters WITH Down/up MODE Control. Company, Texas Instruments, Inc. Datasheet, Download datasheet. Quote . Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated. datasheet, circuit, data sheet: TI – SYNCHRONOUS UP/ DOWN COUNTERS WITH DOWN/UP MODE CONTROL,alldatasheet, datasheet, .
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A high at the enable input inhibits counting. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Full text of ” IC Datasheet: Production processing does not necessarily include testing of all parameters. These counters are fully programmable; that is, the outputs may be preset to either level by placing a low on the load input and entering the desired data dstasheet the data inputs. All four data inputs are shown by the solid line.
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Load preset to BCD seven. Tl is not responsible or liable for any such statements. Data inputs A and D are shown by the solid line. Search the history of datasgeet billion web pages on the Internet.
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The counters can be easily cascaded by feeding the ripple clock output to the enable input of the succeeding counter if parallel clocking is used, or to the clock input if parallel enabling is used.
Tl does not warrant or represent that any license, either express datassheet implied, is granted under any Tl patent right, copyright, mask work datashfet, or other Tl intellectual property right relating to any combination, machine, or process in which Tl products or services are used. I qq is measured with all inputs grounded and all outputs open. This feature allows the counters to be used as modulo-N dividers by simply modifying the count length with the preset inputs.
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Level changes at the enable input should be made only when the clock in- put is high. All data inputs are low. The latter output produces a high-level output pulse with a duration approximately equal to one complete cycle of the clock when the counter overflows or underflows.
Data in is shown by the solid line for both devices. All diodes are 1 N or equivalent.
Reproduction of Tl information in Tl data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. When low, the counter count up and when high, it counts down. Data inputs A, B, and C are shown by the solid line.
Count up to fourteen, fifteen maximumzero, one, and two. To test Qq output of ‘ and ‘LS This mode of operation eliminates the output counting spikes normally associated with asyn- chronous ripple clock counters. Tl is not responsible or liable for such altered documentation. Conditions on other inputs are irrelevant. Count down to one, zero minimumfifteen, fourteen, and thirteen. Voltage values are with respect to network ground terminal.
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 steering logic. Information of third parties may be subject to additional restrictions.
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Data inputs B and C are held at the low logic level. The output will change to agree with the data inputs independently of the level of the clock input.
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