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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Preliminary [short] data sheet Qualification This document contains data datashdet the preliminary specification. An enable must be included in each carry gate in order to inhibit counting.
NXP Semiconductors does not give any damage. Counting is inhibited by a HIGH level on the count enable. This can be a disadvantage of this configuration in some applications. As indicated in the function table, this. The parallel load input PL 744hc191 output Qn propagation delays 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. Static characteristics Table 7.
Recommended operating conditions Table 6. Do not use the TC output as a clock signal because it is subject to decoding spikes.
Important notice Dear Customer | Technologies Ekoms –
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. 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.
Functional description Table 3. Ratasheet operation overrides the counting function.
For detailed and full information see the relevant full data specified use without further testing or modification. Limiting values Table 5.
74HC Datasheet PDF – Hitachi -> Renesas Electronics
The TC output of a given. The TC signal is used internally to enable the RC output. Enter the email address you signed up with and we’ll email you a reset link. All rights reserved Should be replaced with: Remember me on this computer. 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.
The content is still under malfunction of an NXP Semiconductors product can reasonably be expected internal review and subject to formal approval, which may result in to result in personal injury, death or severe property or environmental modifications or additions.
An enable must be included in each carry gate in order to inhibit counting.
Philips 74HC Datasheet Preview. Asynchronous parallel load capability permits the counter to be preset to any desired value.
The latest product status information is available on the Internet at URL http: The RC outputs propagate. Product [short] data sheet Production This document contains the product specification. The TC output will remain.
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. Constant or profits, lost savings, business interruption, costs related to the removal or repeated exposure to limiting values will permanently and irreversibly affect replacement of any products or rework charges whether or not such the quality and reliability of the device.
HIGH until a state change occurs, either by counting or.
Contents 1 General description. Combining the TC signals.
Pin configuration SO16 Fig 4. This document supersedes and replaces all information supplied prior No offer to sell or license — Nothing in this document may be interpreted or to the publication hereof.
(PDF) 74HC191 Datasheet download
The TC signal is used internally to enable the. 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. This feature simplifies the design of multistage counters as shown in Figure 5 and Figure 6.
Measurement points are given in Table 9. Logic diagram 74HC All information provided in this document is subject to legal disclaimers. In case of any inconsistency or conflict with the short data sheet, the Customers are responsible for the design and operation of their applications full data sheet shall prevail.
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.