Texas Instruments CD Latches are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments CD Latches. Quad R/S latch with 3-state outputs. Rev. 11 — 24 March Product data sheet. Table 1. Ordering information. All types operate from °C to +85 °C. CD datasheet, CD circuit, CD data sheet: FAIRCHILD – Quad 3- STATE NOR R/S Latches. Quad 3-STATE NAND R/S Latches,alldatasheet.

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LED selection indicators controlled by multiple switches Reply to Thread. Dec cv4043, 1. Dec 8, 45 0. Happened on this board while searching the internet with no luck. I was looking on Mouser datashest see what was available. Looked at quad switch ICs but those seem to be like independent switches where you can have more than one on at a time. Any help is appreciated. Dec 10, 2. Jan 4, 65 2. You can use RS flip flop or D flip flop to datasheey a circuit for the requirement. Attached is the circuit for your reference.

Please note I’ve never tested it, yet I think it will work. You can test it using a breadboard. If you find the switch bounce dtasheet the circuit performance, you can add a capacitor of nF 0. Dec 10, 3. Thanks for your input! When it comes to this IC stuff, I have absulutely no experience in this stuff but I always like to learn. I can seem to find specifics on that.

I see how you are using the output of IC1A to reset the others and diodes to control signal flow. Just out of curiosity, would it be possible to do the same thing by running cr4043 reset signal from the SW1 instead of Q? Basically just have a short signal to trigger the reset instead of a continuous high signal as would be from the LED output. Thanks again for your help! Dec 10, 4. Dec 19, 2, A couple of other options for “radio buttons”.


Actually, the second one is pretty much the same as tkng’s. Dec 10, 5. I always believed datsaheet was easier to search from something when you know the technical term. That second schematic is kinda like what tkng posted with my inquiry of having the resets run off the switches instead of the output.

I will have to look at these shematics some more later. Dec 11, 6. Dec 11, 7. Thanks for the update. I would prefer a non-toggle action. Always have one LED on. Don’t worry about the mistake. I had no clue the other way wouldn’t work. I’m still trying to get used to those truth tables. You guys are the experts here! So moving those diodes and disconnecting the D and barQ will make it pretty much the same as Ken’s diagram if I’m not mistaken aside from the output transistors. I might stick with the because it uses only one IC chip.

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Dec 15, 8. Thanks for all your help so far sorry for the long winded thesis below Finally got more specifics on the circuit I’m modding. Since it is regulated and is what the rest of the components run off, I was going to use the 3.

Below is part of the circuit with the switches.

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I think around 2. ON part of the switch is not used but has Vo Adtasheet could split the poles having 2 isolated switches and connect per original idea. I remember seeing info in the CD datasheet on the CD?

Dec 15, 9. Dec 15, Dec 16, I see a small error from moving parts around.

C6 goes from the IC out to ground. The switch should be connected directly to the IC1 out line and not ground. I will fix that tonight.

CD Datasheet Fairchild Semiconductor pdf data sheet FREE from

Once you correct that, can you go through exactly what the circuit is supposed to do? R3 was moved to the right dtasheet to clear up some clutter. The main use is for channel switching I say main becuase when the amp is in manual mode, the buttons control other things but this mod is for channel indicators It is connected via a TRS plug basic 3-connductor stereo plug S1 switch is for changing the bank Red or Green LED and the CH is for the different channels the amp can store 4 channels per each of the two banks Changes the voltage of the signal line S 3.


Dec 17, I think I will have to stick with that option for now. Thanks a ton for everyone’s help!! I will let you know how it turns out once I can get someone to test it.

Jan 7, Just wanted to update on this project. It is the least I can do for all the help. Got some parts in today to test and a new solderless breadboard I have wanted to get one for years. I’ll do a little testing to measure current draw and should be ready for the perfboard.

Many thanks to the both of you for your help! One thing I did find is that with 3. I thought the IC could handle dattasheet. Multiple LEDs each controlled by a button Posted by hbim in forum: LED Indicators Posted by opalloyd in forum: Datashete controlled by MCU Posted by drevilz in forum: Led light controlled by dmx Posted by charles01 in forum: Embedded Systems and Microcontrollers.

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