74HC76 DATASHEET PDF

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I initialize the first jk with 1 using a button and preset and clear pin.

This is the integrated pinout: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. For the Preset pin where you have a switch to pull it to ground, you must also have a resistor 5K – 10K to Vcc to ensure the preset pin is datasheey when the switch is not taking it low.

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74HC76 Datasheet PDF

Thanks for your advice. Post Your Answer Dataeheet By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Email Required, but never shown.

How do you ensure this? Home Questions Tags Users Unanswered.

wiring – 74HC76 integrated really use Vcc pin? – Electrical Engineering Stack Exchange

If no what’s the matter of my circuit? Sign up or log in Sign up using Google. About Preset and Clear pin I’m datasyeet them well: I’ve a button that sets the starting 1 in the first jk, so I think that the problem isn’t about Preset or Clear pin.

It means that if I wire pin 5 to Vcc I got always 10 output. Post as a guest Name.

I’m building a simple ring counter with two jk flip-flop. JK1 and JK2 need to initialize in opposite states, don’t they?

74HC76 Datasheet, PDF – Alldatasheet

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. This is my schematic very basic: The problem is that in the circuit that I’m observing on my desk the ring counter only works when pin 5 Vcc is unwired.

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Sign up using Email and Password. Without a resistor in series 74hc67 each LED is is likely that the corresponding Q output is being dragged down to a voltage that is not high enough to be recognized as a legitimate high level by the following J input.

Sign up using Facebook. On CMOS parts, 74h7c6 unused inputs must be connected, directly or through a resistor, to either Vcc or ground, whichever is required to make the part work as required. I’m using 74HC76 integrated that contains two jk. Do not, ever, disconnect the VCC pin when debugging, because that breaks chips.