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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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Thanks for that description.

Just saying hello Started by MichaelaJoy Yesterday at 6: Apr 14, 1. And when you want to cascade them, the various stages will be rippled even though within each stage it’s synchronous.

74HC motorola datasheet & applicatoin notes – Datasheet Archive

Similar Threads Parallel Pin Connections. Search Forums Recent Posts. Media New media New comments Search media. 74h3c90 have to use a series counter to get full synchronous operation in all phases. It was not a stupid question.

However, if you don’t use the outputs to drive a display, you can switch the divide-by-2 section dztasheet 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.

I intend to use the 74hc ddatasheet sheet: 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. You must log in or sign up to reply here. Design b 74HC divoders.

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Using a Qd output as the gate input for a frequency counter would be a bad idea! Click here to register now. To participate you need to register. Someone must have produced a table, but extensive Googling fails to find it! Welcome to our site! BrownOut Banned Sep 1, I have used decade counters using the “carry output” but I don’t have one hooked up right now.

MCHC Datasheet(PDF) – ON Semiconductor

Forums New posts Search forums. Potentiometer Questions Started by norbss Yesterday at Apr 14, 5. Is the Qd output the divide by 10 frequency? 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 Catasheet clip, but I would like to find the pin strappings for the other possibilities I believe I could divide by 2,5,10,20,25,50?

But the larger counter chips that incorporate several like stages do not have access to the divide-by-two stages so you can’t do that. By continuing to use this site, you are consenting to our use of cookies.

Started by fastline Yesterday at 8: That wasn’t a billed response was it? But you’ll still potentially have a non-symmetrical Qd output if it’s not a straight binary counter.

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74HC390 Datasheet

Apr 14, 9. Parallel load and reset are asynchronous operations. You’re maybe confusing this with the term “symmetrical”.

Hello First question here. Would it be suitable to run into another decade counter and get valid divide by ten BCD on all Q outputs if I run Qd from one into the clock of another?

I noticed your signature.

74HC390 Dual Decade Ripple Counter Logic IC

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.

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Apr 14, 3. After that, you can post your question and our members will help you out. Apr 14, 8. Did you look at the datasheet of the SN74HC?

The Qd output of most any counter that is not a pure binary counter is often non-symmetrical, that is, the output is not a perfect square wave. Apr 14, 7.

Design 74HC dividers. Q0 would be Qa. As mentioned, it takes a pretty special application of a counter such that you require a symmetrical Qd output. The TTL counter is such a beast.