74LS09芯片.pdf 54LS09 DM54LS09 DM74LS09 Quad 2-Input AND Gates with Open-Collector Outputs June 1989 54LS09 DM54LS09 DM74LS09 Quad 2-Input AND Gates with Open-Collector Outputs General Description Pull-Up Resistor Equations This device contains four independent gates each of which VCC (Min) b VOH performs the logic AND function The open-collector out- RMAX e ……