DATASHEET 74161 PDF

These synchronous, presettable counters feature an inter- nal carry look-ahead for application in high-speed counting designs. The DM74LSA and. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counters. The LSA/A/A/A are high-speed 4-bit synchronous count- ers. They are edge-triggered, synchronously presettable, and cascadable. MSI building.

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By using our site, you acknowledge that you have read and datasheey 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 circuit, 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.

74161 Datasheet

Finally, you should not count on TTL outputs driving high, as you have shown. TTL works much better pulling dayasheet 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 741661. 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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Home Questions Tags Users Unanswered. That’s probably causing as much trouble as no debounce was.

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

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 using CircuitLab You may object that this will provide LEDs which are on 74116 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 dataxheet added a 0. I added a 0. It’s always the simple things. For a circuit board with a ground plane, the usual guideline is at 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.

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74161 Datasheet PDF

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