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I initialize the first jk with 1 using a button and preset and clear pin.
74HC76 Datasheet PDF –
This is my schematic very basic: If no what’s the matter of my circuit? Thanks for your advice.
Sign up using Email and Password. 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. Post as a guest Name.
74HC76 Datasheet, PDF – Alldatasheet
I’m building a simple ring counter with two jk flip-flop. Sign up or log in Sign up using Google.
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.
Email Required, but never shown. Without a resistor in series with each LED is is likely that datawheet 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.
About Preset and Clear pin I’m managing them well: On CMOS parts, all unused inputs must be connected, directly or through a resistor, datashete either Vcc or ground, whichever is required to make the part work as required.
Home Questions Tags Users Unanswered. Sign up using Facebook. I’m using 74HC76 integrated that contains two jk. It means that if I wire pin 5 to Vcc I got always 10 output.