74HC390 DATASHEET PDF

See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. ORDERING INFORMATION. 74HC Datasheet, 74HC Dual Decade Ripple Counter Datasheet, buy 74HC 74HC Semiconductors are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 74HC Semiconductors.

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You must log in or register to reply 74hcc390. Q0 would be Qa. However, if you don’t use the outputs to drive a display, you can switch the divide-by-2 section with the divide-by-five section so that the divide-by-two section is last in each decade chain and then you WILL have a symmetrical output.

As mentioned, it takes a pretty special application of a counter such that you require a symmetrical Qd output. You’re maybe confusing this with the term “symmetrical”.

I intend to use the 74hc data sheet: Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at That wasn’t a billed response was it? And just because a counter is a synchronous counter doesn’t mean that it’s synchronous in every sense or will be synchronous in cascade. For instance, the synchronous decade counter is synchronous in its counting only.

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BrownOut Banned Sep 2, Just saying hello Started by MichaelaJoy Yesterday at 6: Design 74HC dividers. So that’s the purpose of the “other” mode. Ask a Question Want to reply to this thread or ask your own question?

74HC390 – Dual Decade Ripple Counter

Similar Threads Parallel Pin 74hv390. Click here to register now. Mikebits Well-Known Member Sep 1, By continuing to use this site, you are consenting to our use of cookies. You have to use a series counter to get full synchronous operation in all phases. Design b 74HC divoders. Space Varmint New Member Sep 1, To participate you need to register. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

Articles Top Articles Search resources. Apr 14, 1.

If I remember correctly it is an asynchronous signal. And when you want to cascade them, the various stages will be rippled even though within each stage it’s synchronous. Apr 14, 6.

Apr 14, 3. Using a Qd output as the gate input for a frequency counter would be a bad idea!

74HC390 Dual Decade Ripple Counter Logic IC

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Well those pins are not on the pinout. You’ll need to choose a username for the site, which only take a couple of moments here.

74HC datasheet, Pinout ,application circuits 74HC/HCT Dual Decade Ripple Counter

Search Forums Recent Posts. Started by fastline Yesterday at datashedt For a better experience, please enable JavaScript datasbeet your browser before proceeding. Apr 14, 2. I know the pin strappings for divide by 4 example 14 to 215 to 32,4,8,12,14 to Ground1 in and 13 out and divide by from a Mr Carlson’s Lab YouTube clip, but I would like to daasheet the pin strappings for the other possibilities I believe I could divide by 2,5,10,20,25,50?

You do have to be careful with counters. It appears, from looking at the datasheet, that indeed Q4 is a divide by 10 output, when the chip is configured for a decade counter. Thread starter Space Varmint Start date Sep 1, Apr 14, 8.

I think I got it now. I want to experiment with 74HC chip. Apr 14, 4.