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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Fairchild Semiconductor

It’s always the simple things. Also, have you added a 0. Get into the habit now. You can often get away with less, but as you’ve just learned, insufficient decoupling can have weird symptoms. 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.

Then I used a pullup resistor for the clear switch. As further issues arise I see myself stuck once more with a dysfunctional circuit. Home Questions Tags Users Unanswered.

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4-bit Synchronous Counter with Asynchronous Clear

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Since you already need one section of aand there are 6 gates per IC, you simply go. I’d reduce that down to something in the nF to 1uF range. You vatasheet object that this will provide LEDs which are on when the output is low, and off when the outputs are high, which is confusing.

WhatRoughBeast 49k 2 28 Sign up or log in Sign up using Google. Finally, you should not count on TTL outputs driving high, as datasgeet have shown.

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. Since you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit.

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

Oh, Ill change that and see what happens. That’s probably causing as much trouble as no debounce was.

In that case, invert the signals going to your LEDs. For breadboards, use a cap for each IC.

I’m still getting the same effect. So your outputs should be connected like.

Without this buffering, your switch should not work on a button push, only on a release. Sign up using Facebook. For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. I datasheef a 0. I switched the LEDs around and connected their input to 5V and their ground to the output pins. Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V.

TTL works much better pulling loads down. Post as a guest Name. I have added a debounce circuit, but still to avail.