![]() The TPIC6B595 is very similar to 74HC595 but with 8 transistors built-in, simplifying your circuit. ![]() ATmega328 Microcontroller Uno Development Board 16MHz CPU 2KB RAM 1KB/32KB EEPROM/Flash. But it can drive transistors which can in turn drive the display. Buy Now Datasheet Tech Specs CAD Models Images Price and Stock Powered by A000066 Datasheet Technical Specifications Arduino A000066 technical specifications, attributes, and parameters. Your code becomes more complex and the display would be much less bright because of the multiplexing.ħ4HC595 cannot handle voltages over 5V and only small currents. Again, only 3 Arduino pins required and only 12~13 resistors. The second chip drives 5x PNP transistors (or P-channel MOSFETS) to control the common anodes. One chip sinks current from the segments. This would give the brightest possible display.Īlternatively use 2x TPIC6B595. You would also need 35~40 series resistors. No multiplexing would be required, making your code easier. The TPIC6B595 can handle 12V and up to 150mA per channel. If the cathodes are not connected in common, you can use 5x TPIC6B595 chips to drive your display (one per digit). It needs at least 12v with ample current to drive it. I found out that my LED array 7 segments cannot be supplied with only 5v.
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