74LS03芯片.pdf 54LS03 DM54LS03 DM74LS03 Quad 2-Input NAND Gates with Open-Collector Outputs June 1989 54LS03 DM54LS03 DM74LS03 Quad 2-Input NAND 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 NAND function The open-collector out- RMAX e ……