description. The ‘HC are 4-bit synchronous, reversible, up/down binary counters. Synchronous counting operation is provided by having all flip-flops clocked. 74HC datasheet, 74HC pdf, 74HC data sheet, datasheet, data sheet, pdf, Philips, Presettable synchronous 4-bit binary up/down counter. 74HC Counter ICs are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 74HC Counter ICs.
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Test circuit for measuring switching times Table The timing skew between state changes in the first and last stages is represented by the cumulative delay of the clock as it ripples through the preceding stages. Recommended operating conditions Table 6. As indicated in the function table, this operation overrides the counting function. All referenced brands, product names, service names and trademarks product for such automotive applications, use and specifications, and b are the property of their respective owners.
NXP Semiconductors takes no Limiting values — Stress above one or more limiting values as defined in responsibility for the content in this document if provided by an information the Absolute Maximum Ratings System of IEC will cause permanent source outside of NXP Semiconductors.
In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer The clock input CP to outputs Qn, TC propagation delays, clock pulse width and maximum clock frequency 74HC All information provided in this document is subject to legal disclaimers.
NXP Semiconductors does not give any damage. Information present on the parallel data inputs D0 to D3 is loaded into the counter and appears on the outputs when the parallel load PL input is LOW. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
The TC output of a given stage it not affected by its own CE signal therefore the simple inhibit scheme of Figs 5 and 6 does not apply. If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or telephone details via salesaddresses nexperia. Help Center Find new research papers in: Do not use the TC output as a clock signal because it is subject to decoding spikes. The RC outputs propagate.
Skip to main content. A short data sheet is intended products are for illustrative purposes only.
(PDF) 74HC191 Datasheet download
All rights reserved Should be replaced with: Do not use the TC output as a clock signal because it is subject to decoding spikes.
CE inhibits the RC output pulse as indicated in the function.
The timing skew between state changes in the first. Revision history Table Static characteristics Table 7. HIGH until a state change occurs, either by counting or. The TC output of a given. Contents 1 General description. NXP does not accept any liability in this respect.
Asynchronous parallel load capability permits the counter.
It is neither qualified nor tested Translations — A non-English translated version of a document is for in accordance with automotive testing or application requirements. As indicated in the function table, this. Combining the TC signals datashewt all the preceding stages forms the CE input for a given stage. Ordering information Table 1.
Typical timing sequence 7. Functional description Table 3. Limiting values Table 5. This feature simplifies the design of multistage 74jc191 as shown in Figure 5 and Figure 6. Product data sheet Rev. Asynchronous parallel load capability permits the counter to be preset to any desired value.
74HC 데이터시트(PDF) – NXP Semiconductors
This operation overrides the counting function. For detailed and full information see the relevant full data specified use without datsaheet testing or modification. The parallel load input PL to clock CP recovery times, parallel load pulse width and output Qn transition times 74HC All information provided in this document is subject to legal disclaimers.
Combining the TC signals from all the preceding stages forms the CE input for a given stage. This feature 74gc191 the design of multistage counters as shown in Figs 5 and 6. It is only necessary to inhibit the first. The timing skew between state changes in the first and last stages is represented by the cumulative delay of the clock as it ripples through the preceding stages.
It is only necessary to inhibit the first stage to prevent counting in all stages, since a HIGH on CE inhibits the RC output pulse as indicated in the function table. The TC output will remain.
Export might require a prior own risk, and c customer fully indemnifies NXP Semiconductors for any authorization from competent authorities. Customers should provide appropriate shall an agreement be valid in which the NXP Semiconductors product is design and operating safeguards to minimize the risks associated with their deemed to offer functions and qualities beyond those described in the applications and products.
The TC signal is used internally to enable the. In Figure 5, each RC output is used as the clock input to the next higher stage. Constant or profits, lost savings, business interruption, costs related to daatasheet removal or repeated exposure to limiting values will permanently and irreversibly affect replacement of any products or rework charges datxsheet or not such the quality and reliability of the device.
Product [short] data sheet Production This document contains the product specification.