74161 COUNTER DATASHEET PDF


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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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Get into the habit now. I switched the LEDs around and connected their input to 5V and their ground to the output pins.

Fairchild Semiconductor

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 is subject to these policies. Sign up or log in Sign up using Google. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. You can often get away with less, but as you’ve just learned, insufficient decoupling can have conuter symptoms.

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Post as a guest Name. I added a 0. Home Questions Tags Users Unanswered. For breadboards, use a cap for each IC.

So your outputs should be connected like. Oh, Ill change that and see what happens. Since you already need one section of aand there are 6 gates per IC, you simply go. Email Required, but never shown. Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V. Finally, you should not count on TTL outputs driving high, as you have shown.

Since you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit. WhatRoughBeast 49k 2 28 Then I used a pullup resistor for the clear switch. Also, have you added a 0.

I’d reduce that down to something in the nF to 1uF range. I have added a debounce circuit, but still to avail.

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. TTL works much better pulling loads down.

Without this buffering, your switch should not work on a button push, only on a release. Sign up using Email and Password.

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For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. As further issues arise I see myself stuck once more with a dysfunctional circuit. 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.

Sign up using Facebook. I’m still getting the same effect.

N 4-bit counter not counting properly – Electrical Engineering Stack Exchange

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. 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 datasheeet when the outputs 7411 high, which is confusing.

It’s always the simple things.

In that case, invert the signals going to your LEDs.