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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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Email Required, but never shown. This is the integrated pinout: 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: I’m building a simple ring counter with two jk flip-flop. Sign up using Email and Password.

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For the Preset pin where you have a switch to eatasheet 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. Sign up or log in Sign up using Google.


By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand dwtasheet your continued use of the website is subject to these policies. Thanks for your advice. Home Questions Tags Users Unanswered. 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.

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

On CMOS parts, all unused inputs must be connected, directly or through a resistor, to either Vcc ratasheet ground, whichever is required to make the part work as required. Post as a guest Name. JK1 and JK2 need to initialize in opposite states, don’t they? I initialize the first jk with 1 using a button and preset and clear pin.

74HC76 Datasheet Renesas pdf data sheet FREE from

I’m datashete 74HC76 integrated that contains two jk. If no what’s the matter of my circuit? Do not, ever, disconnect the VCC pin when debugging, because that breaks chips.


Sign up using Facebook. About Preset and Clear pin I’m managing them well: Post Your Answer Discard 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 74hd76 subject to these policies.

How do you ensure this? It means that if I wire pin 5 to Vcc I got always 10 output. 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. 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.