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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Pin 1 Rbias Input: No external clocks required. Apr 14, 7, InputThe A and B inputs can be swapped to reverse the direction of the external counters. 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.

74LS193 Datasheet PDF

Jan 26, Connect the encoder quadrature outputs to the A and B inputs. This was my first experiment with digital logic though, so maybe it will just make more sense as I work with things.


Yes, my password is: The LFLS outputs can connect directly to the up and down clock inputs of counters such as or Jan 25, 1.

Input for external component connection. If not, it’ll always be loading the data inputs into the data outputs. A high level applied shset this input. I followed your advice and held pin 11 load pin low and held pin 14 reset high and the counter counted!

(PDF) 74193 Datasheet download

I hope I’ve described my situation well enough, I just can not figure out why the counter isn’t counting. AT AT counter schematic diagram using shift register ttl ttl logic diagram shift register circuit datx of 16 bit counter counter shift register SIGNAL PATH designer function table half-adder by using D flip-flop.

Rbias X4 or X1 resolution multiplication. Jan 26, 7.

Your name or email address: Try Findchips PRO for pin configuration. Jan 26, 5. F bypass capacitor and resistor to ground for the internaldirection o f the external counters.

pin configuration datasheet & applicatoin notes – Datasheet Archive

Guaranteed by design, not subject to production testing. The information is contained in the truth-table in the datasheet. Jan 26, 9. The de vice can be cleared at any time by the asynchronous reset pin – it may also be loaded in parallel by activating the asyn chronous parallel 74os193 pin.


Previous 1 2 My best guess is that the pulse is too slow, but even when I apply a Hz square wave nothing fpr. Any help would be great.

The count-down terminal is held high. Jan 26, 8.

Jan 28, 9, Jan 25, 3 0. The LFLSS outputs can connect directly to the up and down clock inputs of counters such as or Daya need the schematic you’re useing to help. A high level applied to this input selects X4. 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.