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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Customers should provide appropriate shall an agreement be valid in which the NXP Semiconductors product is design and operating dahasheet 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. Do not use the TC output as a clock signal because it is subject to decoding spikes.

HIGH until a state change occurs, either by dztasheet or. In Figure 5, each RC output is used as the clock input to the next higher stage. 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.

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.

74HC191 Datasheet

Logic diagram 74HC All information provided in this document is subject to legal disclaimers. 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. As indicated in the function table, this. CE inhibits the RC output pulse as indicated in the function. Contents 1 General description.


Asynchronous parallel load capability permits the counter to be preset to any desired number. As indicated in the function table, this operation overrides the counting function. NXP does not accept any liability in this respect. Functional diagram Fig 2.

Vatasheet description Table 3. Static characteristics Table 7. Measurement points are given in Table 9. Log In Sign Up.

In Figure 7, the configuration shown avoids ripple delays and their associated restrictions. Do not use the TC. A short data sheet is intended products are for illustrative purposes only. Ordering information Table 1. In this configuration the. The Datasheett output of a given stage it not affected by its own Datsheet signal therefore the simple inhibit scheme of Figs 5 and 6 does not apply.

Asynchronous parallel load capability permits the counter to be preset to any desired value.

74HC Datasheet PDF –

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.

Limiting values are stress ratings only and proper operation of the device at these or any other conditions above those given in In no event shall NXP Semiconductors be liable for any indirect, incidental, the Recommended operating conditions section if present datqsheet the punitive, special or consequential damages including – without limitation – lost Characteristics sections of this document is not warranted.

Do not use the TC output as a clock signal because it is subject to decoding spikes.


Revision history Table The TC output will remain. The latest product status information is available on the Internet at URL http: Inputs include clamp diodes. Product [short] data sheet Production This document contains the product specification.

Figure 6 shows a method of causing state changes to occur simultaneously in all stages. Short data datashedt — A short data sheet is an extract from a full data sheet 74ch191 — Applications that are described herein for any of these with the same product type number s and title. Important notice Dear Customer.

Combining the TC signals from all the preceding stages forms the CE input for datasyeet given stage. NXP Semiconductors does not give any damage. 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.

This operation overrides the counting function. 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. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer 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.

NXP Semiconductors does not accept any liability related to any default, damage, costs or problem daasheet is based on any weakness or default in the