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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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 believe I could divide 74hc3990 2,5,10,20,25,50?
If they’re ripple counters, they’ll ripple 744hc390 cascade. After that, you can post your question and our members will help you out. Apr 14, 9. I think I got it now.
(PDF) 74HC390 Datasheet download
For instance, the synchronous decade counter is synchronous in its counting only. Space Varmint New Member Sep 3, satasheet Apr 14, 3. I have used decade counters using the “carry output” but I don’t have one hooked up right now.
You’re maybe confusing this with the term “symmetrical”. Hey, but thanks for reply. Apr 14, 4. Did you look at the datasheet of the SN74HC?
74HC390 Dual Decade Ripple Counter Logic IC
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. Thanks for that description.
Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at You have to use a series counter to get full synchronous operation in all phases. I want to experiment with 74HC chip. Apr 14, 5. 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.
74HC Datasheet pdf – Dual decade ripple counter – Philips
Forums New posts Search forums. And when you want to cascade them, the various stages will be rippled even though within each stage it’s synchronous. It was not a stupid question. Hello First question here. Parallel load and reset are asynchronous operations.
Articles Top Articles Search resources. I intend to use the 74hc data sheet: That wasn’t a billed response was it? Just saying hello Started by MichaelaJoy Yesterday at 6: Media New media New comments Search media.
Using a Qd output as the gate input for a frequency counter would be a bad idea! Apr 14, 7.
MCHC Datasheet(PDF) – ON Semiconductor
Welcome to our site! I don’t know what that other configuration is. Ask a Question Want to reply to this thread or ask your own question? The TTL counter is such a beast. 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.