74HC390 DATASHEET PDF

Gajar Oh, Texas Instruments say it is obsolete do not show its datasheet. Apr 14, 2. Well those pins are not on the pinout. After that, you can post your question and our members will help you out. As mentioned, it takes a pretty special application of a counter such that you require a symmetrical Qd output. If I remember correctly it is an asynchronous signal.

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Dakazahn Thanks for that description. Search Forums Recent Posts. Media New media New comments Search media. It was not a stupid question.

You must log in or sign up to reply here. Design b 74HC divoders. 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! Potentiometer Questions Started by norbss Yesterday at Apr 14, 5. Is the Qd output the divide by 10 frequency? By continuing to use this site, you are consenting to our use of cookies. Parallel load and reset are asynchronous operations. 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. 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. Most 10 Related.

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