________________________________________________________________________________

MODEL:  std157.vhd                                               VERSION:    1.0
DESCRIPTION:  2:1 Mux with enable                                DATE: 97 OCT 14
TIMING FILE:  std157.ftm                                         VERSION:    1.3
                                                                 DATE: 01 JAN 21
LOCATION:  http://www.FreeModelFoundry.com/fmf_models/std/std157.vhd
LOCATION:  http://www.FreeModelFoundry.com/fmf_models/std/std157.ftm

LIBRARY:  STND

GENERIC PART NUMBERS COVERED:  74AC157, 74ACT157, 74ALS157, 74ALS157A, 74AS157,
                               74F157, 74FCT157, 74FCT2157, 74HC157, 74HCT157,
                               74LS157, 74LVC157, 74S157, 74VHC157

________________________________________________________________________________

SUPPORTED PART NUMBERS
    ____________________________________________________________________________

                   Cypress Semiconductor

    Part Number                       Data Source
    ____________________________________________________________________________

    CY74FCT157CTQC                         7

    CY74FCT157CTSOC                        7

    ____________________________________________________________________________

                   Fairchild Semiconductor

    Part Number                       Data Source
    ____________________________________________________________________________

    74AC157MTC                             1

    74AC157PC                              1

    74AC157SC                              1

    74AC157SJ                              1

    74ACT157MTC                            1

    74ACT157PC                             1

    74ACT157SC                             1

    DM74ALS157N                            16

    DM74AS157M                             19

    DM74AS157N                             19

    74F157PC                               1

    74F157SC                               1

    74F157SJ                               1

    DM74LS157M                             21

    DM74LS157N                             21

    DM74LS157SJ                            21

    DM74S157N                              22

    74VHC157M_3V3                          13

    74VHC157MTC_3V3                        13

    74VHC157N_3V3                          13

    74VHC157SJ_3V3                         13

    74VHC157M_5V                           13

    74VHC157MTC_5V                         13

    74VHC157N_5V                           13

    74VHC157SJ_5V                          13

    ____________________________________________________________________________

                   Integrated Device Technology

    Part Number                       Data Source
    ____________________________________________________________________________

    IDT74FCT157CTL                         8

    IDT74FCT157CTP                         8

    IDT74FCT157CTQ                         8

    IDT74FCT157CTSO                        8

    IDT74LVC157ADC                         10

    IDT74LVC157APG                         10

    IDT74LVC157APY                         10

    IDT74LVC157AQ                          10

    ____________________________________________________________________________

                   Motorola, Inc.

    Part Number                       Data Source
    ____________________________________________________________________________

    MC74AC157D                             2

    MC74AC157N                             2

    MC74ACT157D                            2

    MC74ACT157N                            2

    MC74VHC157D_3V3                        14

    MC74VHC157DT_3V3                       14

    MC74VHC157M_3V3                        14

    MC74VHC157D_5V                         14

    MC74VHC157DT_5V                        14

    MC74VHC157M_5V                         14

    ____________________________________________________________________________

                   Philips Semiconductors

    Part Number                       Data Source
    ____________________________________________________________________________

    74ALS157D                              17
 
    74ALS157N                              17
 
    N74F157D                               4
 
    N74F157N                               4
 
    74LVC157AD                             11
 
    74LVC157ADB                            11
 
    74LVC157APW                            11
 
    ____________________________________________________________________________

                   Quality Semiconductor

    Part Number                       Data Source
    ____________________________________________________________________________

    QS74FCT157CTH                          9

    QS74FCT157CTQ                          9

    QS74FCT157CTSO                         9

    QS74FCT157CTS1                         9

    QS74FCT157CTZ                          9

    QS74FCT2157CTP                         9

    QS74FCT2157CTSO                        9

    QS74FCT2157CTS1                        9

    QS74FCT2157CTQ                         9

    ____________________________________________________________________________

                   Texas Instruments

    Part Number                       Data Source
    ____________________________________________________________________________

    CD74AC157M                             15

    CD74ACT157M                            15

    SN74ALS157AD                           18

    SN74ALS157AN                           18

    SN74AS157D                             18

    SN74AS157N                             18

    SN74F157D                              3

    SN74F157N                              3

    CD74HC157E                             20

    CD74HC157M                             20

    CD74HCT157E                            20

    CD74HCT157M                            20

    SN74LS157D                             23

    SN74LS157N                             23

    SN74LVC157AD                           12

    SN74LVC157ADB                          12

    SN74LVC157APW                          12

    SN74S157D                              23

    SN74S157N                              23


________________________________________________________________________________

DATA SOURCES

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

    1.   Fairchild Semiconductor data sheet March 1998

    2.   Motorola FACT Data DL138 Rev 3

    3.   Texas Instruments SDFS053A-Revised October 1993

    4.   Philips Semiconductors Product Spec March 1996

    5.   Motorola Fast and LS TTL Data, DL121 REV 5

    6.   National Semiconductor November 1994

    7.   Cypress Semiconductor Doc 7019-Revised March 1997

    8.   Integrated Device Technology Data Sheet September 1996

    9.   Quality Semiconductor data sheet MDSL-00007-02

    10.  IDT Data Sheet April 1999

    11.  Philips Semiconductors Product Spec 1998 Jul 29

    12.  Texas Instruments SCAS292G-Revised October 1998

    13.  Fairchild Semiconductor data sheet December 1997

    14.  Motorola DL203 Rev 1

    15.  Texas Instruments SCHS283 June 1999

    16.  Fairchild Semiconductor DS006205 Revised February 2000

    17.  Philips Semiconductor 853-1129 01670 1991 Feb 08

    18.  Texas Instruments SDAS081C-Revised December 1994

    19.  Fairchild Semiconductor DS006290 Revised March 2000

    20.  Texas Instruments SCHS153A-Revised May 2000

    21.  Fairchild Semiconductor DS006396 Revised April 2000

    22.  Fairchild Semiconductor DS006470 Revised April 2000

    23.  Texas Instruments SDLS058-Revised March 1988