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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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. 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. I have added a debounce dwtasheet, but still to avail. Without this buffering, your switch should not work on a button push, only on a release. Get into the habit now.

Finally, you should not count on TTL outputs driving high, as you have shown.

4-bit Synchronous Counter with Asynchronous Clear

TTL works much better pulling loads down. So your outputs should be connected like. 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. In that case, invert the signals going to your LEDs. Since you already need one section of aand there are 6 gates per IC, you simply go. 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.

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Fairchild Semiconductor – datasheet pdf

Home Questions Tags Users Unanswered. That’s probably causing as much trouble as no debounce was. I’d reduce that down to something in the nF to 1uF range. Oh, Ill change that and see what happens.

So your outputs should be connected like simulate this circuit — Schematic created counte 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.

Since you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit. WhatRoughBeast 49k 2 28 Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V.

Then I used a pullup resistor for the clear switch. I switched the LEDs around and connected their input to 5V and their ground to the output pins. I’m still getting the same effect. Also, have you added a 0.

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Fairchild Semiconductor

I added a 0. It’s always the simple things. For a circuit board dattasheet a ground plane, the usual guideline is counrer least one cap per 5 ICs. For breadboards, use a cap for each IC.

You can often get away with less, but as you’ve just learned, insufficient decoupling can have weird symptoms. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie dafasheetand that your continued use of the website is subject to these policies.