Integrated IC Logic IC 7400 74LS00 7402 74LS02 7404 74LS04 7406 74LS06 7408 74LS08 7410 74LS10 7412 7414 7420 74LS20 7421 74LS21 7432 74LS32 7448 74LS48 7473 74LS73 7474 74LS74 74LS132 74LS139 LM567 LM394 MC145100 UM3750 DG508A DIP electronic IC chip