74hc76 Flip Flops are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 74hc76 Flip Flops. 74HC76 Datasheet PDF Download – DUAL J-K FLIP FLOP, 74HC76 data sheet. STMicroelectronics 74HC76 datasheet, DUAL J-K FLIP FLOP (1-page), 74HC76 datasheet, 74HC76 pdf, 74HC76 datasheet pdf, 74HC76 pinouts.
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JK1 and JK2 need to initialize in opposite states, don’t they? Post as a guest Name.
On CMOS parts, all 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.
Do not, ever, disconnect the VCC pin when debugging, because that breaks chips. If no what’s the matter of my circuit?
Without a resistor in series with 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 Email and Password.
74HC76 Datasheet PDF –
Thanks for your advice. I’m using 74HC76 integrated that contains two jk. Sign up or log in Sign up using Google. This is my schematic 74nc76 basic: Datxsheet problem is that in the circuit that I’m observing on my desk the ring counter only works when pin 5 Vcc is unwired.
How do you ensure this? I initialize the first jk with 1 using a dataseet and preset and clear pin. It means that if I wire pin 5 to Vcc I got always 10 output.
About Preset and Clear pin I’m managing them well: This is the integrated pinout: 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 high when the switch is not taking it low.
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