Datasheets for electronic components. This file is the datasheet for the following electronic components: 74LS – ?. Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. 74LS datasheet, 74LS circuit, 74LS data sheet: TI – SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL,alldatasheet.

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PDF 74LS190 Datasheet ( Hoja de datos )

Reproduction of this information with alteration is an unfair and deceptive business practice. All four data inputs are shown by the solid line.

When low, the counter count up and when high, it counts down. Table 1 shows the generic functions and Table 2. A disadvantage of this configuration, in someoutput of a given stage is not affected by its own CE.

Data inputs A, B, and C are shown by the solid line. Data input D is shown by the dashed line. Output states in row 11 apply for input states in rows 11 through 14DC Characteristics Table. Voltage values are with respect to network ground terminal.


Texas Instruments

The counters can be easily cascaded by feeding the ripple clock output to the enable input of the succeeding counter if datasueet clocking is used, or to the clock input if parallel enabling is used. 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.

To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. For simplication, pulse rise times, reference levels, etc. Data inputs A and D are shown by the solid line.

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. Data in is shown by the solid line for both devices. Search the history of over billion daatasheet 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.

This feature allows the counters to dataaheet used as modulo-N dividers by simply modifying the count length with the preset inputs.

Full text of “IC Datasheet: 74LS”

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. State changes of the counters are synchronous with the.


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Delete arrow from 15 to 0. 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. Add arrow from 15 to 8. Information of third parties may be subject to additional restrictions. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.

Data inputs B and C are held at 74s190 low logic dwtasheet. Full text of ” IC Datasheet: In the counting modes, state changes are initiated by the rising edge of the. This mode of operation eliminates the output counting spikes normally associated with asyn- chronous ripple clock counters.

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 74la190 from Tl under the patents or other intellectual property of Tl.

Load preset to BCD seven.

These counter change on the positive transition of the clock input. An asynchronous parallel load input overrides coun ting and loads the data. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: No abstract text available Text: Errors in Truth Table.