74LS164 DATASHEET PDF

Part Number: 74LS, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. These 8-bit shift registers feature gated serial inputs and an asynchronous clear. A low logic level at either input inhibits entry of the new data, and resets the first. This 8-bit shift register features gated serial inputs and an asynchronous reset. The gated serial inputs (A and B) permit complete control over incoming data as a.

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And why in the name of everything that is holy and unholy does the single end of an otherwise unconnected wire to the CLOCK and RESET pins make the IC do stuff datxsheet if it’s the wrong stuffespecially if blasting them with 5V doesn’t seem to do anything at all?

74LS164 8-bit Shift Register IC

Now that that’s cleared up: This seems to contradict any basic understanding of datadheet I thought I had. Or am i maybe measuring the voltage in a wrong way?

What is the standard way of doing this? High Level Input Voltage.

74LS (SLS) – 8-bit Serial-input/parallel-output Shift Register | eet

High Level Output Current. By continuing to use this site, you are consenting to our use of cookies. If it still doesn’t work, post a schematic.

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The IC is a shift register so it does effectively have a latch function, any data in the SR is stored until the power is removed or its clocked out Hence, the input of my second IV would be high all the time thanks to the soon-to-be soldered pull-up.

High Level Input Voltage. A high level input enables the other input which will then determine the state of the first flip-flop. Media New media New dtaasheet Search media.

Datasheet «SN54/74LS164»

My problem is that nothing seems to work, and, even worse: Which would cause LEDs to flicker, or other weird thins to happen, i’d guess. Is that a good thing, or a bad thing? Or am I mistaken about the meaning of ‘Low’ and ‘High’? Low Level Output Current. If you just ‘hook things up’ as 744ls164 ‘so call experts’ state you will get the problems that you are experiencing.

Maximum Ratings are those values beyond which damage to the device datasjeet occur. The IC is very fast so you will [ or shouldn’t] see any flicker as the SR clocks. Functional operation should be restricted to the Recommended Operating Conditions.

74LS (SLS) – 8-bit Serial-input/parallel-output Shift Register | eet

Low Level Output Voltage. Setup Time, A1 or A2 to Clock.

Functional operation should be restricted to the Recommended Operating Conditions. All inputs are diode- clamped to minimize transmission-line effects.

High Level Input Current. Correct, IF the pin is not connected to the output of a previous IC.

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So when you push the switch the ‘A’ pin goes low and when you release the switch the ‘A’ pin goes high, giving a high going clock edge which is whats required by the LS This 8-bit shift register features gated serial inputs and an. Since the IC is a relatively bad conductor right? This doesn’t seem right. Potentiometer Questions Started by norbss Yesterday at Same with ‘cleaning’ capacitators.

Data at the serial inputs 744ls164 be changed while the clock is high or low, but only information meeting the setup requirements will be entered dattasheet occurs or the low-to-high level transition of the clock input. Additionally, I wanted to add that: For a better experience, please enable JavaScript in your browser before proceeding. But in this case, I’d be pulling up an output pin, and the input of the second IC would always be ‘on’ by default.

Hence, the input of my second IV would be high all the time thanks to the soon-to-be soldered pull-up. That switch does NOT turn on the outputs – but touching that pin does. Output Short Circuit Current. I also posted this question over at Electronic Circuits on Discovercircuits.