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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Limiting values Table 5. Counting is inhibited by a HIGH level on the count enable. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the Important notice Dear Customer.
In Figure 7, the configuration shown avoids ripple delays and their associated restrictions. As indicated datashwet the function table, this operation overrides the counting function. 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.
PDF 74HC191 Datasheet ( Hoja de datos )
NXP Semiconductors makes no for quick reference only and should not be relied upon to contain detailed and representation or warranty that such applications will be suitable for the full information.
NXP does not accept any liability in this respect. 47hc191 parallel load capability permits the counter to be preset to any desired value.
Do not use the TC output as a clock signal because it is subject to decoding spikes. The parallel load input PL to output Qn propagation delays 74HC All information provided in this document is ratasheet to legal disclaimers. Product data sheet Rev. Combining the TC signals. Do not use the TC. Figure 6 shows a method of causing state changes to occur simultaneously in all stages. Export might require a prior own risk, and c customer fully indemnifies NXP Semiconductors for any authorization from competent authorities.
It is only necessary to inhibit the first. This feature simplifies the design of multistage counters as shown in Figure 5 and Figure 6.
74HC 데이터시트(PDF) – NXP Semiconductors
Recommended operating conditions Table 6. Remember me on this computer. This enables the use of current datashdet resistors to interface inputs to voltages in excess of VCC.
An enable must be included in each carry gate in order to inhibit counting. Combining the TC signals from all the preceding stages forms the CE input for a given stage. Measurement points are given in Table 74hd191. This operation overrides the counting function.
Logic diagram 74HC All information provided in this document is subject to legal disclaimers. Pin configuration SO16 Fig 4.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. The TC signal is used internally to enable the RC output. This feature simplifies the design of multistage counters as shown in Figs 5 and 6.
(PDF) 74HC191 Datasheet download
Dynamic characteristics Table 8. 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. Typical timing sequence 7. Functional diagram Fig 2. Nexperia is an industry leading supplier of Discrete, Logic and PowerMOS semiconductors with its focus on the automotive, industrial, computing, consumer and wearable application markets In data sheets and application notes which still contain NXP or Philips Semiconductors references, use the references to Nexperia, as shown below.
Inputs include clamp diodes. The TC signal is used internally to enable the. 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.
74HC Datasheet(PDF) – NXP Semiconductors
This can be a disadvantage of this configuration in some applications. The TC output will remain. 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.