________________________________________________________________________________

MODEL:  std258.vhd                                               VERSION:    1.0
DESCRIPTION:  2:1 Mux with 3-state inverting output              DATE: 98 APR 03
TIMING FILE:  std258.ftm                                         VERSION:    1.0
                                                                 DATE: 98 MAY 07

LIBRARY:  STND

GENERIC PART NUMBERS COVERED:  74ACT258

________________________________________________________________________________

SUPPORTED PART NUMBERS
    ____________________________________________________________________________

                   Fairchild Semiconductor

    Part Number                       Data Source
    ____________________________________________________________________________

    74ACT258MTC                            1

    74ACT258PC                             1

    74ACT258SC                             1

    74ACT258SJ                             1

    ____________________________________________________________________________

                   Motorola

    Part Number                       Data Source
    ____________________________________________________________________________

    MC74ACT258D                            2

    MC74ACT258N                            2

________________________________________________________________________________

DATA SOURCES

    These are the primary sources of data used in determining behaviour and 
    timing of the components represented by this model.

    1.   National Semiconductor FACT Advanced CMOS logic Databook 1993

    2.   Motorola FACT Data DL138 Rev 3