Could anyone explain the function of 74HC04? Thank you.

EEW2018

Could anyone explain the function of 74HC04? Thank you. [Copy link]

Can anyone explain the function of 74HC04? Thank you. If you have any information, please provide it. Thank you.

qwqwqw2088

Inverter or NOT Gate

Six pairs of inverters are integrated in the chip

The function of the NOT gate is that when the input is low, the output is high, and when the input is high, the output is low.

EEW2018

qwqwqw2088 posted on 2019-9-13 22:08 The inverter or NOT gate chip integrates 6 pairs of inverters without NOT gates. When the input is low level, the output is high level, and when the input is high level...

Thank you very much. Why do you have to use 74Hc04 when you can just use 6 transistors?

littleshrimp

Depending on your needs, uln2003 can also be replaced by 14 transistors

maychang

EEW2018 posted on 2019-9-14 06:15 Thank you very much. Why do you have to use 74Hc04 when you can just use 6 transistors?

It is not enough to use 6 transistors, 6 collector load resistors and 6 input current limiting resistors are also required.

In addition, the transistor input and output levels do not match the HC series digital chip levels.

maychang

EEW2018 posted on 2019-9-14 06:15 Thank you very much. Why do you have to use 74Hc04 when you can just use 6 transistors?

You asked about the internal circuit of a two-input NOR gate a few days ago. I posted a diagram of the internal structure of 7402.

If 74HC04 "just uses 6 transistors", then it can also be said that 7402 "just uses 24 transistors"?

EEW2018

maychang posted on 2019-9-14 09:39 You asked about the internal circuit of a two-input NOR gate a few days ago. I posted a diagram of the internal structure of 7402. If it is 74HC04, "just use 6 transistors...

Feeling grateful.