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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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 at the data inputs.

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Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, Tl will not be responsible for any failure to meet such requirements. All data inputs are low.

Datasheet PDF –

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. A high at the enable input inhibits counting. This mode of operation eliminates the output counting spikes normally associated with asyn- chronous ripple clock counters. Buyers acknowledge and agree that any such use of Tl products which Tl has not designated as military-grade is solely at the Buyer’s risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.

Testing and other quality control techniques are used to the extent Tl deems necessary to support this warranty. Tl products are not authorized for use in safety-critical applications such as life support where a failure of the Tl product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Count up to eight, nine maximumzero, one, and two.


Conditions on other inputs are irrelevant.

SN Datasheet Texas Instruments pdf data sheet FREE from

Lqad preset to binary thirteen. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Tl assumes no liability for applications assistance or customer product design.

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74190 Datasheet PDF

Data input D is shown by the dashed line. 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. Load preset to BCD seven. Data inputs A, B, and C are shown by the solid line. All diodes are 1 N or equivalent.

Count down to one, zero minimumfifteen, fourteen, and thirteen. Count up to fourteen, fifteen maximumzero, one, and two. Minimum count enable time is the interval immediately preceeding the rising edge of the clock pulse during which interval the count enable input must be low to ensure counting.

Data inputs A and D are shown by the solid line. Data inputs B and C are held at the low logic level. Full text of ” IC Datasheet: Tl is not responsible or liable for such altered documentation. All four data inputs are shown by the solid line.

For simplication, pulse rise times, reference levels, etc. Level changes at the enable input should be made datadheet when the clock in- put is high. Search the history of over billion web pages on the Internet. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Tl products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by Tl.

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.


Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. Two outputs have been made available to perform the cascading function: Data in is shown by the solid line for both devices. Production processing does not necessarily include testing of all parameters. Tl warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl’s standard warranty.

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To test Qq output of ‘ and ‘LS SN54′, SN74’ Circuits 5. Tl does not warrant or represent that any license, either express or implied, is granted under any Tl patent right, copyright, mask work right, or other Tl intellectual property right relating to any combination, machine, or process in which Tl products or services are used. This feature allows the counters to be used as modulo-N dividers by simply modifying the count length with the preset inputs.

Customers are responsible for their products and applications using Tl components. 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. I qq is measured with all inputs grounded and all outputs open. Count down to one, zero minimumnine, eight, and seven.

Voltage values are with respect to network ground terminal. Reproduction of this information with alteration is an unfair and deceptive business practice. The output will change to agree with the data inputs independently of the level of the clock input. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from Tl under the patents or other intellectual property of Tl.