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.

Author: Nibar Zulurr
Country: Philippines
Language: English (Spanish)
Genre: Automotive
Published (Last): 26 November 2010
Pages: 140
PDF File Size: 19.31 Mb
ePub File Size: 17.52 Mb
ISBN: 716-1-96118-350-6
Downloads: 71439
Price: Free* [*Free Regsitration Required]
Uploader: Mezijind

Do you have LOAD pin 11 held high?

Jan 26, The counter chip I had on hand was aand I’ve spend a lot of dta 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 information is contained in the truth-table in the datasheet. Confirm that 5V power is present on the Power pin 74ld193 16 and ground is present on pin 8. Previous 1 2 Connect the encoder quadrature outputs to the A and B inputs.

Jan 26, 5. A high level applied to this input.

pin configuration datasheet & applicatoin notes – Datasheet Archive

I’ve tried many different set-ups but haven’t had any luck. The A and B inputs can be swapped to reverse the direction of the external counters.


Input for external flr connection. Jan 25, 1. The LS outputs can connect directly to the up and down clock inputs of counters such as oror Guaranteed by design, not subject to production testing. A high level applied to this input selects X4. We’ll need the schematic you’re useing to help. SiDY Jul data sheet datasheet. I followed your advice and held pin 11 load pin low and held pin 14 reset high and the counter counted!

74LS193 Datasheet PDF

My best guess is that the pulse is too slow, but even when I apply a Hz square wave nothing happens. Apr 14, 7, Quote of the day.

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, 2.

Jan 26, 4. No external clocks required. Try Findchips PRO for pin configuration. Connect a resistor to ground for the internal current mirror which feeds. Right now I have foe chip debouncing a switch and and output from that going into the count-up terminal of the Pin 1 Rbias Input: No abstract text available Text: 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 74sl193 chip.


The count-down terminal is held high. The LFLS outputs can connect directly to the up and down clock inputs of counters such as or Jul 17, 22, 1, Jan 26, 3.

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 So my first project has been to try and make a 7-segment display count up from 0 to 9 using adta kind of button press. Pin 1 Rbias input: Shedt was my first experiment with digital logic though, so maybe it will just make more sense as I work with things. Jan 25, 3 0.

I have 74lss193 the data-sheets and read quite a bit on this forum as well, but nothing I try seems to work. Jan 26, 8. Rbias X4 or X1 resolution multiplication.