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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Apr 14, 2. Welcome to our site! You’ll need to choose a username for the site, which only take a couple of moments here. Hey, but thanks for reply. 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.

Datasheet «MC54/74HC390»

You’re maybe confusing this with the term “symmetrical”. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at I intend to use the 74hc data sheet: Just saying hello Started by Datashdet Yesterday at 6: Space Varmint New Member Sep 3, But you’ll still potentially have a non-symmetrical Qd output if it’s not a straight binary counter.

For instance, the synchronous decade counter is synchronous in its counting only. Apr 14, 8. You must log in or register to reply here. You must log in or sign up to reply here. Hello First question here. I want to experiment with 74HC vatasheet. Articles Top Articles Search resources. Design 74HC dividers. Is the Qd output the divide by 10 frequency?


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

BrownOut Banned Sep 1, After that, you can post your question and our members will help you out. I don’t know what that other configuration is.

Apr 14, 3. 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.

By continuing to use this site, you are consenting to our use of cookies. I noticed your signature. Did you look at the datasheet of the Dtaasheet That wasn’t a billed response was it?

Someone must have produced a table, but extensive Googling fails to find it! Using a Qd output as the gate input for a frequency counter would be a bad idea! Did you derive that from the data sheet? Space Varmint New Member Sep 1, I think I got it now. So that’s the purpose of the “other” mode. Switching lots of connections simultaneously. And when you want to cascade them, the various stages 744hc390 be rippled even though within each stage it’s synchronous.

Well those pins are not on the pinout.


74HC/HCT390 Dual Decade Ripple Counter

If they’re ripple counters, they’ll ripple in cascade. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. Search Forums Recent Posts. Thanks for that description.

Started by fastline Yesterday at 8: 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 find the pin strappings for the other possibilities I darasheet I could divide by 2,5,10,20,25,50?

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. Similar Threads Parallel Pin Connections.

Potentiometer Questions Started by norbss Yesterday at The TTL counter is such a beast. Apr 14, 9. You do have to be careful with counters. Oh, Texas Instruments say it is obsolete do not show its datasheet. Forums New posts Search forums.

Media New media New comments Search media. Apr 14, 5. You have 74hc3390 use a series counter to get full synchronous operation in all phases.