This circuit is a synchronous up down 4-bit binary counter. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counter with Dual Clock. SN54/74LS is an UP/DOWN MODULO Binary Counter. Separate. Count Up and Count Down Clocks are used and in either counting mode the.

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Discussion in ‘ The Projects Forum ‘ started by gcentauriJan 25, Jan 25, 1.

Datasheet(PDF) – Fairchild Semiconductor

Jan 25, 3 0. So my first project has been to try and make a 7-segment display count up from 0 to 9 using some kind of button press.

The counter chip I had on hand was aand I’ve spend a lot of time reading up on it and trying to make it work, but for the life of me I can’t get the thing to count. I’ve tried many different set-ups but haven’t had any luck. I’m wondering if I’m not sending it a pulse that it can recognize as a clock cycle, or if there’s just something weird with the chip.


Right now I have a chip debouncing a switch and and output from that going into the count-up terminal of the The count-down terminal is held high. When I flip the switch I know I’m getting a slow pulse maybe that’s the problem, and if so, is there a circuit I can build to make a quick single pulse?

questions about 74193 counter

They all just stay at low, even though I’m giving the counter input a pulse. I hope I’ve described my situation well enough, I just can not figure daatasheet why the counter isn’t counting.

My best guess is that the pulse is too slow, but even when I apply a Hz square wave nothing happens. Any help would be great. I have read the data-sheets satasheet read quite a bit on this forum as well, but nothing I try seems to work.

Jan 26, 2.

74LS Datasheet pdf – Synchronous 4-Bit Binary Counter with Dual Clock – Fairchild Semiconductor

Mar 24, 21, 2, We’ll need the schematic you’re useing to help. Jan 26, 3. Jul 17, 22, 1, Do you have LOAD pin 11 held high?

If not, it’ll always be loading the data inputs into the data outputs. Jan 26, 4. Jan 28, 9, Confirm that ix power is present on the Power pin pin 16 and ground is present on pin 8.


Jan 26, 5. Nov 20, 2. This IC is a discontinue item. Jan 26, 6. I followed your advice and datasueet pin 11 load pin low and held pin 14 reset high and the counter counted!

(PDF) 74193 Datasheet download

Jan 26, 7. The information is contained in the truth-table in the datasheet. Often there is a timing diagram that dayasheet the same information along with the critical timing information as well.

Jan 26, 8. This was my first experiment with digital logic though, so maybe it will just make more sense as I work with things. Jan 26, 9. Apr 14, 7, Jan 26, You May Also Like: Hardware, Tools, and Toolchain This is Part 1 of a step-by-step guide to bringing custom microcontroller designs to life.

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