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I don’t know how often the pulses will be coming in, because it will depend on what the sensor is detecting. BIN counter synchronous reset. I am doing a handful of analog readings which as I’ve read take significant amount of timeI am currently driving 2 servos PWM outputand I still have more features I am trying to add. Click on the appropriate section below for the relevant data sheets.

74HC85 4-Bit Magnitude Comparator

Dual D type flip flop 4-bit. I didn’t want to use the Arduino directly. To view Acrobat files you must install Adobe Acrobat Reader. Logic Data sheets Series Component. Hex inverting schmitt trigger. Is there any chance the Arduino might miss this “count reached” signal? Quad 2 to datashet line mux Inverter.

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And not the lest, what westfw says! Dual 4-input NOR datashret. Quad 2 to 1 line multiplexer. I think in order to make the 74hct work, it will need some supporting chips, just so I don’t need datashedt tremendous number of pins in order for it to work. Hex 3-state inverting buffer. For needs like you describe, there is always the option of using a small microcontroller and implement the functionality you need.

Quad 2-input NAND gate. Quad 2-input 3-state mux. Octal 3-state inverting buffer.

Triple 3-input AND gate. Quad 2-input exclusive OR gate. Dual 2 to 4 line multiplexer. Triple 3-input NOR gate.

74HC85 даташиты PDF – Datasheetcom

Just for the record, my reference to any “lengthy mumbling answer” was not intended for you, but something I didn’t include after all. Quad 2-input OR gate. A quick googling gave me theor 74HCT, which might fit the bill.

Quad 2-input NOR gate. Triple 3-input NAND gate.

We hold data-sheets on many items that are found in the stores inventory. You all may be right, I may be trying to do something that the Arduino can already do, but I just thought that if I could do it off board, I could datasheett the processing cycles for something more important.

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Quad 3-state buffer Lo enable. Octal 3-state D type flip flop.

BIN counter asynchronous reset. Octal 3-state bus tranceiver. You can use a 74HC 8 bit counter feeding into one side of a 74HC85 magnitude comparatorthen feed the other side from a shift register 74HC Hex inverting buffer gate. I didn’t see your answer until after! Grumpy Mike, your circuit might be the ticket! Into the feed your number with the shift out tutorial. BCD to decimal decoder.

BCD counter synchronous reset.

74HC85 Datasheet, 74HC85 PDF – Free Datasheets, 4-bit magnitude comparator

Triple 3-input OR gate. D More importantly, how fast will these signals be? I’d suggest two or three shift registers latchablelike the 74HC Dual 4-bit binary counter. Dual 4-input NAND gate. Octal transparent inv op latch. I just thought that if I could have something external count the pulses, I could have the Arduino doing something more important. I have never used it, but judging from the datasheet it would seem so.