F54LS20DM

Military Version: F54LS20DM - Dual 4-Input NAND Gate: Features two separate heavy-duty logic gates where each gate requires four independent input signals to all be high at the exact same moment before the output will drop to a low state. If even one of those four inputs goes low, the output remains high, which makes this chip perfect for decoding large memory address spaces - NTE Commercial Equivalent: NTE74LS20