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.
|Published (Last):||13 August 2014|
|PDF File Size:||11.63 Mb|
|ePub File Size:||4.4 Mb|
|Price:||Free* [*Free Regsitration Required]|
74LS Datasheet pdf – Synchronous 4-Bit Binary Counters – Fairchild Semiconductor
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. TTL works much better pulling loads down. Okay I wired 7,9, and 10 together and then connected them to a 1K resistor to 5V.
Sign up using Email and Password.
Fairchild Semiconductor – datasheet pdf
Get into the habit now. Since you already need one section of aand there are 6 gates per IC, you simply go. I added a 0. Then I used a pullup resistor for the clear couunter.
couner Without this buffering, your switch should not work on a button push, only on a release. So your outputs should be connected like. Post as a guest Name.
I’m still getting the same effect. I’d reduce that down to something in the nF to 1uF range.
Finally, you should not count on TTL outputs driving high, as you have shown. I have added a debounce circuit, but still to avail.
As further issues arise I see myself stuck once more with a dysfunctional circuit. That’s probably causing as much trouble as no debounce was. Sign up using Facebook. So your outputs should be connected like simulate this circuit — Schematic created using CircuitLab You may object that this will couner LEDs which are on when the output is low, and off when the outputs are high, which is confusing. For a circuit board with a ground plane, the usual guideline is at least one cap per 5 ICs. Email Required, but never shown.