The DM74LS circuit is a synchronous up/down 4-bit binary counter. Synchronous operation is provided by hav- ing all flip-flops clocked simultaneously. 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. Part Number: 74LS, Maunfacturer: National Semiconductor, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor.

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That is 74ls193 datasheet Dec 5, Messages: Jan 12, Messages: My best guess is that the pulse is too slow, but even when I apply a Hz square wave nothing happens.

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 74ls13, is there a circuit I can build to make a quick single pulse?

Mar 24, 21, 2, Dec 1, Messages: I read your post about cascading them together. The borrow output produces a pulse equal in width to the count down input 74ls193 datasheet the counter underflows.

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A clear input 74ls193 datasheet been provided which, when taken to a high level, forces all outputs to the low level; independent of the count and load inputs. No, create an account now. I wired the circuit to make it count up. Jan 26, 4. 74ls193 datasheet 20, 1.

You won’t need the inverter in the clock line if your clock doesn’t go anywhere else. Jan 26, 6. I’m 74ls193 datasheet 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 74ls193 datasheet.

74LS Datasheet – National –

The clear, count, and load inputs are buffered to lower the drive requirements of clock 74ls193 datasheet, etc. They all just stay at low, even though I’m giving datasbeet counter input a pulse.

I used 74ls193 datasheet Motorola 74LS datasheetso if you don’t recognize the input and output labels in the schematic, refer to this datasheet. I have read the data-sheets and read quite a bit on this forum as well, but nothing I 74ls193 datasheet seems to work.

The counter is fully programmable; that is, each output may be preset to either level by entering 74ls193 datasheet desired data at the inputs while the load input is low. Jan 26, 5.

This IC is a discontinue item. RoffDec 10, Do you already have an account?

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The counters can then be easily cascaded by 74ls193 datasheet the borrow 74ls193 datasheet carry outputs to the count down and count up inputs respectively of the succeeding counter.

I had to switch the wires of the clock and the high between pins 4 and 5 to make it count down. We’ll need the schematic you’re useing to help.

74LS Datasheet, PDF – Alldatasheet

This mode of operation eliminates the output counting spikes normally associated with asynchronous ripple-clock counters. Log in or Sign up. Separating Signal from Power: Electro Tech 74ls193 datasheet an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

Discussion in ‘ The Projects 74sl193 ‘ started by gcentauriJan 25, I hope I’ve described my situation well enough, I just can not figure out why the counter isn’t counting. The information is contained in the truth-table in the datasheet. By continuing to use this 74ls193 datasheet, you are consenting to our use of cookies. Electronics Forum Circuits, Projects and Microcontrollers. Both borrow and carry outputs are available to cascade both the 74ls193 datasheet and down counting functions.

Jan 28, 74ls193 datasheet, I didn’t know what to do with the inputs or whether to take the outputs into the inputs of the next chip.

Sep datssheet, Messages: