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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The count-down terminal is held high. LFLS pin ttl counter.

I hope I’ve described my situation well enough, I just can not figure out why the counter isn’t counting. This IC is a discontinue item.

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 load pin. Jul 17, 22, 1, Jan 26, shee.

LFLSS pin ttl counter I have read the data-sheets and read quite a bit on this forum as well, but nothing I try seems to work. The signals can drive directly the count-up and count-down clocks on the next counter in a series. Input for external component connection.


Nov 20, 2.

Jan 26, 4. Connect a resistor to ground for the internal current mirror which feeds.

Motorola – datasheet pdf

Jan 26, 3. InputThe A and B inputs can be swapped to reverse the direction of the external counters. Do you already have an account? 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.

No external clocks required. SiDY Jul data sheet datasheet.

questions about 74193 counter

No, create an account now. A high level applied to this input selects X4. If not, it’ll always be loading the 74s193 inputs into the data outputs. The LFLS outputs can connect directly to the up and down clock inputs of counters such as or Jan 26, 6.

74LS193 Datasheet PDF

I followed your advice and held pin 11 load pin low and held pin 14 reset high and the counter counted! You May Also Like: They all just stay at low, even though I’m giving the counter input a pulse.


I’ve tried many different set-ups but haven’t had any luck. Jan 25, 1. Pin 1 Rbias input: Sehet a resistor to ground forreverse the direction of the external counters.

questions about counter | All About Circuits

Pin 1 Rbias Input: Mar 24, 21, 2, The counters have separate count-up and count-down clock inputs CPu andstate or state Jan 28, 9, Rbias X4 or X1 resolution multiplication. 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. The LFLSS outputs can connect directly to the up and down clock inputs of counters such as or Often there is a timing diagram that contains the same information along with the critical timing information as well.

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