8051 drive transistor

I want use 8051's P1 port to drive transistors.

Which transistor do you want to drive? There's gazillions of different types of transistors out there. You'll really have to look at their datasheets and your application to understand what it takes to drive that particular transistor, in the circuit you're putting it in, before you can even begin to deal with its interface to the 8051. You'll also have to check the datasheet of the particular variant of 8051 you're using.

In other words: if you can't answer this question on your own, you may not be qualified to design hardware at all. Get a textbook on electronics and work through it, then.

I want use 8051's P1 port to drive transistors.

Can I use 74LS373 as this kind of driver or...?

So you want to connect a port pin to the input pin of something.

If you look very carefully at the datasheet5 for your uC, you will find strange values such as Ioh and Iol. For the chip you want to attach, you will find some other funny things like Iil and Iih.

Now, go figure what those mean and compare the two sets and, lo and behold, you will have your answer.

Erik

"give a man a fish and he will eat for a day, teach him to fish and he will eat5 for life"

So sorry for forgetting listing the transistors I want to use.

They are small power switch transistors, such as 2N2222 and 2N2907.

I have checked datasheets for MCU and transistor already, what I want to know is to make sure...

Thank you for your ideas.

"I have checked datasheets for MCU and transistor already, what I want to know is to make sure..."

So what did you come up with?

8051 can drive those transistors.

before I implement the extensive experiments

I have to check my ideas.

"I have to check my ideas."

and if you also want anyone else to check them, you'll have to say what they are!