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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As further issues arise I see datasheeet 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.

4-bit Synchronous Counter with Asynchronous Clear

Get into the habit now. Finally, you should not count on TTL outputs driving high, as you have shown.

counfer 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.

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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.

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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 datashheet 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. 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 datasyeet connected them to a 1K resistor to 5V.

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Fairchild Semiconductor – datasheet pdf

Then I used a pullup resistor for dataseet 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. 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.

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Fairchild Semiconductor

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