SN54/74LS is an UP/DOWN MODULO Binary Counter. Separate. Count Up and Count Down Clocks are used and in either counting mode the. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counter with Dual Clock. be preset to either level by entering the desired data at the inputs while the load input is LOW. The output will change independently of the count pulses.
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Discussion in ‘ The Projects Forum ‘ started by gcentauriJan 25, Jan 25, 1. 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.
(PDF) 74193 Datasheet download
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 shete going into the count-up terminal sheeet 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?
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 out why the counter isn’t counting. My best guess is that the pulse is too slow, but 74ks193 when I apply a Hz square wave nothing happens. Any help would flr great.
pin configuration datasheet & applicatoin notes – Datasheet Archive
I have read the data-sheets and read quite a bit on this forum as well, but nothing I try seems to work. Jan 26, 2.
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.
Motorola – datasheet pdf
Jan 28, 9, Confirm that 5V 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 held pin 11 load pin low and held pin 14 reset high and the counter counted! Jan 26, 7. The information is contained in the truth-table in the datasheet.
Often there is a timing diagram that contains 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.
questions about 74193 counter
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