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Triple 3-input OR gate. Triple 3-input AND gate. Quad 2-input NAND gate. Dual D type flip flop E-trig. Dual 2 to 4 line multiplexer. Quad 2-input OR gate. For needs like you describe, there is always the option of using a small microcontroller and implement the functionality you need. We hold data-sheets on many items that are found in the stores inventory. A quick googling gave me theor 74HCT, which might fit the bill.

Hex 3-state datasheeg buffer. Octal 3-state bus tranceiver.

I didn’t want to use the Arduino directly. I didn’t see your answer until after!


To view Acrobat files you must install Adobe Acrobat Reader. Hex 2-input NOR datashert buffer. Triple 3-input NOR gate. Quad 2-input exclusive OR gate.

BIN counter synchronous reset. Dual 4-input NOR gate.

I’d suggest two or three shift registers latchablelike the 74HC But it will cost you some 2 PWM outputs for each timer you use. I just thought that if I could have something external count the pulses, I could have the Arduino doing something more important. Dual 4-bit binary counter. Is there any chance dagasheet Arduino might miss this “count reached” signal?

7485 – 7485 4-bit Magnitude Comparator Datasheet

The counter can be reset with an arduino output. BCD counter synchronous reset. 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 save the processing cycles for something more important.

Dual D type flip flop 4-bit. I’m unsure if you can use timer0, as that’s also used for millis and some other rather important stuff Arduino-wise. Click on the appropriate section below for the relevant data sheets.


74HC85 datasheet, Pinout ,application circuits 4-bit Magnitude Comparator

Quad 2 to 1 line mux Inverter. Dual 4-input NAND gate. Dual monostable multi vibrator.

Hex inverting buffer gate. BCD counter asynchronous 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. Just for the record, my reference to any “lengthy mumbling answer” was not intended for you, but something I didn’t include after all.

BIN counter asynchronous reset. Triple 3-input NAND gate.

Quad 2-input NOR gate. Quad 3-state buffer Hi enable. It can divide the input frequency from 3 to And not the lest, what westfw says! Hex inverting schmitt trigger.