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. DMDMDM Synchronous These synchronous presettable counters feature an inter- Office Distributors for availability and specifications.
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(PDF) 74161 Datasheet download
Get into the habit now. Oh, Ill change that and see what happens.
Sign up using Email and Password. Finally, you should not count on TTL outputs driving high, as you have shown. As further issues arise I see myself stuck once more with a dysfunctional circuit.
You can often daya away with less, but as you’ve just learned, insufficient decoupling can have weird symptoms.
Since you already need one couhter of aand there are 6 gates per IC, you simply go. I’d reduce that down to something in the nF to 1uF range.
74LS Datasheet pdf – Synchronous 4-Bit Binary Counters – Fairchild Semiconductor
WhatRoughBeast 49k 2 28 That’s probably causing as much trouble as no debounce was. Xounter you already need one section of aand there are 6 gates per IC, you simply go simulate this circuit.
Sign up using Facebook. 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. For breadboards, use a cap for each IC.
Email Required, but never shown. 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.
Fairchild Semiconductor – datasheet pdf
I’m still getting the same effect. TTL works much better pulling loads down. In that case, invert the signals going to your LEDs.
Post as a guest Name. I switched the LEDs around and connected their input to 5V and their ground to the output coynter. 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. I added a 0. Sign up or log in Sign up using Google. 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.