74161 COUNTER DATASHEET PDF

74LS Synchronous 4-bit Binary Counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counters. These synchronous, presettable counters feature an inter- nal carry look-ahead for application in high-speed counting designs. The DM74LSA and.

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Fairchild Semiconductor – datasheet pdf

So your outputs should be connected like. Email Required, but never shown. Post as a guest Name. Whenever I press the clock button I get all of the leds on except maybe one or two, with some flashing during the button press.

Fairchild Semiconductor

You can often get away with less, but as you’ve just learned, insufficient decoupling can have weird symptoms. For breadboards, use a cap for each IC. I’d reduce that down to something in the nF to 1uF range.

Since you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit. I added a 0. I’m still getting the same effect.

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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. WhatRoughBeast 49k 2 28 So your outputs should be connected like simulate this circuit — Schematic created using CircuitLab You may object that this will provide LEDs which are on when the output is low, and off when the outputs are high, which is confusing.

It’s always the simple things. I have added a debounce circuit, but still to avail. I switched the LEDs around and connected their input to 5V and their ground to the output pins.

TTL works much better pulling loads down. As further issues arise I see myself stuck once more with a dysfunctional circuit. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Sign up using Facebook.

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Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V. Without this buffering, your switch should not work on a button push, only on a release.

Then I used a pullup resistor for the clear switch. That’s probably causing as much trouble as no debounce was. You may object that this will provide LEDs which are on when the output is low, and off when the outputs are high, which is confusing. Dounter that case, invert the signals going to your LEDs.

Oh, Ill change that and see what happens. Sign up using Email and Password.

Since you already need one section of aand there are 6 gates per IC, you simply go. Get into the habit now.

Finally, you should not count on TTL outputs driving high, as you have shown. For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. Also, have you added a 0.