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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Finally, you should not count on TTL outputs driving high, as you have shown. Also, have you added a 0.

Since you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit. I switched the LEDs around and connected their input to 5V and their ground to the output pins. You can often get away with less, but as you’ve just learned, insufficient decoupling can have weird symptoms.

As further issues arise I see myself stuck once more with a dysfunctional circuit. 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.

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Email Required, but never shown. In that case, invert the signals going to your LEDs. Home Questions Tags Users Unanswered. That’s probably causing as much trouble as no debounce was. Sign up using Facebook. TTL works much better pulling loads down.

Fairchild Semiconductor

Then I used a pullup resistor for the clear switch. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policy741611 our Terms of Service. For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. 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.

Whenever I press the clock counfer I get all of the leds on except maybe one or two, with some flashing during the button press. I’d reduce that down to something in the nF to 1uF range. 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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I added a 0. Since you already need one section of aand there are 6 gates per IC, you simply go. Sign up or log in Sign up using Google. It’s always the simple things. For breadboards, use a cap for each IC.

Sign up using Email and Password. WhatRoughBeast 49k 2 28 I’m still getting the same effect. Without this buffering, your switch should not work on a button push, only on a release.

4-bit Synchronous Counter with Asynchronous Clear

I have added a debounce circuit, but still to avail. Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V. Get into the habit now. Post as a guest Name. So your outputs should be connected like.

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. Oh, Ill change that and see what happens.