74hc244 74ls244 brings crural graph to use circuit

74HC244 is a common drive signal chip, commonly used at all sorts of sheet piece in machine Mcu system, odd the electric current of an output of machine Io mouth is very small and 244 chip use enlarge electricity namely, he is 8 bumper that have 3 state output and line drive, the exclusive distinction of he and 74HC245 is 74HC244 it is one-way, data can flow to Y end from A end only, and 74HC245 is two-way. Their drive ability is identical. 74HC244 often also is used at segregation, for instance odd a machine and and the equipment such as the mouth is connected continuously theoretic can use sheet directly piece the mouth of a few I/O of machine is received and buccal line, but if circuit board was not done good, may implicative the computer and the mouth is burned-out, want to add a 74HC244 chip to be kept apart so.
74HC244 is CMOS circuit, 74ls244 is ambipolar transistor circuit, the characteristic difference of both is very big, LS parts of an apparatus is to fall into disuse model, do not want to choose as far as possible.
74HC240, 74HC241, 74HC244 is the product of same set, their distinction is very little there is an expatiation in making the Chinese material below foot and its function respect.

74hc244 objective pursues