74HC244.PDF

8同相三态缓冲器驱动器。可用于增大驱动电流的情况，比如单片机输出驱动数码管电流不够，就可利用74HC244来驱动数码管，增加亮度。 The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state ou