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I initialize the first jk with 1 using a button and preset and clear pin.
74HC76 Datasheet PDF
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
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.