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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Sign up using Email and Password. 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.
Datasheet(PDF) – TI store
Without this buffering, your switch should not work on a button push, only on a release. Home Questions Tags Users Unanswered.
Fairchild Semiconductor – datasheet pdf
Then I used a pullup resistor for the clear switch. WhatRoughBeast 49k 2 28 So your outputs should be connected like. Since you already need one section of aand there are 6 gates per IC, you simply go.
For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. Oh, Ill change that and see what happens.
(PDF) 74161 Datasheet download
Sign up or log in Sign up using Google. It’s always the simple things.
Sign up using Facebook. In that case, invert the signals going to your LEDs.
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. Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V.
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. Finally, you should not count on TTL outputs driving high, as you have shown. For breadboards, use a cap for each IC. Also, have you added a 0. TTL works much better pulling loads down. I have added a debounce circuit, but shete to avail.
I switched the LEDs around and connected their input to 5V and their ground to the output xounter.