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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This was my first experiment with digital logic though, so maybe it will just make more sense as I work with things. Previous 1 2 Connect a resistor to ground for the internal current mirror which feeds.

Yes, my password is: I’m wondering if I’m not sending it a pulse that it can recognize as a clock cycle, or if sheeh just something weird with the chip.

questions about counter | All About Circuits

Pin CLK is the clock signal, RST theloading of the start value is the only feature not inherent in the circuit that is present in the Right now I have a chip debouncing a switch and and output from that going into the count-up terminal of the LFLSS pin ttl counter The counters have separate count-up and count-down clock inputs CPu andstate or state I’ve tried many different set-ups but haven’t had any luck. No abstract text available Text: Nov 20, 2. Guaranteed by design, not subject to production testing.


Input for external component connection. 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. Connect the encoder quadrature outputs to the A and B inputs. Jan 26, 9. 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.

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 load pin. Jan 26, 8.

74LS193 Datasheet PDF

The LFLS outputs can connect directly to the up and down clock inputs of counters such as or SiDY Jul data sheet datasheet. Quote of the day. The A and B inputs can be swapped to reverse the direction of the external counters. Jan 25, 1. Jan 26, 6. LFLS pin ttl counter. The information is contained in the truth-table in the datasheet. vor

Jan 26, 7. Try Findchips PRO for pin configuration. No, create an account now. Jan 26, 4. The signals can drive directly the count-up and count-down clocks on the next counter in a series. A high level applied to this input. Apr 14, 7, The count-down terminal is held high.


questions about 74193 counter

No external clocks required. Jul 17, 22, 1, AT AT counter schematic diagram using shift register ttl ttl logic diagram shift register circuit diagram of 16 bit counter counter shift register SIGNAL PATH designer function table half-adder by using D flip-flop. Jan 26, The LFLSS outputs can connect directly 74sl193 the up and down clock inputs of counters such as or A high level applied to this input selects X4.

This IC is a discontinue item. F bypass capacitor and resistor to ground for daga internaldirection o f the external counters. Do you have LOAD pin 11 held high? If not, it’ll always be loading the data inputs into the data outputs.

Confirm that 5V power is present on the Power pin pin 16 and ground is present on pin 8. DatzThe A and B inputs can be swapped to reverse the direction of the external counters. Pin 1 Rbias Input: Any help would be great. Jan 25, 3 0. Mar 24, 21, 2, You May Also Like: