Subject: Imp

From: "bharat sinha" <[email-masked]>
Date: Wed, 18 Nov 1998 15:06:14 PST

Hi,
 This is just one of the sample files. Could you please spare a few 
minutes and see it thru S2IPLT. See how weird the waveforms are.
This is a cell about which I had mailed warnings etc. yeterday.
This problem is there with at least 1000 more cells!
.please help me out.
Thanx
Bharat
> >>|******************************************************************* 
>>|************************************************************************
>>|
>>[IBIS ver]       2.1
>>[File name]      x.ibs
>>[File Rev]       0
>>[Date]            
>>[Source]          
>>[ |
>>|************************************************************************
>>|                          Component x
>>|************************************************************************
>>|
>>[Component]       x
>>[Manufacturer]  
>>[Package]
>>| variable       typ                 min                 max
>>R_pkg            0.000               0.000               0.000
>>L_pkg            0.000H              0.000H              0.000H
>>C_pkg            0.000F              0.000F              0.000F
>>|
>>[Pin]  signal_name          model_name           R_pin     L_pin     
>C_pin
>>1       x           x
>>| one  In1                  Input1
>>| two  En1                  Enable1
>>VDD    VDD                  POWER
>>VSS    GND                  GND
>>|
>>[Pin Mapping]  pulldown_ref    pullup_ref      gnd_clamp_ref   
>power_clamp_ref
>>|
>>1              GND             POWER                           
>>one            GND             POWER                           
>>two            GND             POWER                           
>>VDD            NC              POWER                           
>>VSS            GND             NC                              
>>|
>>|************************************************************************
>>|                             Model  x
>>|************************************************************************
>>|
>>[Model]           x
>>Model_type       I/O
>>Polarity         Non-Inverting
>>Enable           Active-Low
>>Vinl =   0.80V
>>Vinh =   2.00V
>>Vmeas =   1.50V
>>C_comp           0.000F              0.000F              0.000F
>>|
>>|
>>[Temperature Range]       25.00               100.00              
0.000
>>[Voltage Range]           2.50V               2.25V               
2.75V
>>[Pulldown]
>>| voltage     I(typ)              I(min)              I(max)
>>|
>>  -2.50      -0.90mA      -1.20mA      -0.80mA
>>  -2.30      -1.00mA      -1.30mA      -0.90mA
>>  -2.10      -1.20mA      -1.60mA      -1.10mA
>>  -1.90      -1.50mA      -1.80mA      -1.40mA
>>  -1.70      -1.90mA      -2.30mA      -1.80mA
>>  -1.50      -2.50mA      -2.90mA      -2.40mA
>>  -1.30      -3.90mA      -4.20mA      -3.80mA
>>  -1.10      -7.80mA      -7.00mA      -8.70mA
>>  -0.90     -28.23mA     -17.55mA     -32.84mA
>>  -0.70     -40.06mA      -0.69A      -2.20A
>>  -0.70     -40.06mA      -0.69A      -2.20A
>>  -0.60     -36.30mA      -0.59A      -2.00A
>>  -0.50     -31.11mA     -31.64mA     -29.64mA
>>  -0.40     -25.45mA     -25.59mA     -24.14mA
>>  -0.30     -19.52mA     -19.40mA     -18.42mA
>>  -0.20     -13.32mA     -13.08mA     -12.50mA
>>  -0.10      -6.83mA      -6.61mA      -6.37mA
>>   0.00       0.24nA       1.33nA       0.29nA
>>   0.10       6.74mA       6.43mA       6.30mA
>>   0.20      12.95mA      12.33mA      12.22mA
>>   0.30      18.64mA      17.71mA      17.76mA
>>   0.40      23.85mA      22.61mA      22.94mA
>>   0.50      28.57mA      27.02mA      27.76mA
>>   0.60      32.82mA      30.96mA      32.23mA
>>   0.70      36.62mA      34.45mA      36.35mA
>>   0.80      39.99mA      37.49mA      40.15mA
>>   0.90      42.93mA      40.12mA      43.62mA
>>   1.00      45.46mA      42.33mA      46.78mA
>>   1.10      47.49mA      44.02mA      49.62mA
>>   1.20      48.67mA      45.16mA      52.16mA
>>   1.30      49.48mA      45.98mA      54.05mA
>>   1.40      50.10mA      46.64mA      55.24mA
>>   1.50      50.61mA      47.20mA      56.11mA
>>   1.60      51.05mA      47.68mA      56.82mA
>>   1.70      51.45mA      48.12mA      57.43mA
>>   1.80      51.81mA      48.54mA      57.99mA
>>   1.90      52.15mA      48.93mA      58.51mA
>>   2.00      52.47mA      49.30mA      59.00mA
>>   2.10      52.79mA      49.66mA      59.46mA
>>   2.20      53.10mA      50.01mA      59.92mA
>>   2.30      53.39mA      50.33mA      60.36mA
>>   2.40      53.68mA      50.67mA      60.79mA
>>   2.50      53.96mA      50.99mA      61.22mA
>>   2.60      54.26mA      51.36mA      61.61mA
>>   2.70      54.55mA      51.72mA      62.04mA
>>   2.80      54.84mA      52.25mA      62.47mA
>>   2.90      55.13mA      53.51mA      62.90mA
>>   3.00      55.47mA      58.57mA      63.33mA
>>   3.10      56.13mA      74.97mA      63.76mA
>>   3.20      57.78mA       0.11A      64.19mA
>>   3.30      61.08mA       0.15A      64.73mA
>>   3.40      69.51mA       0.19A      65.75mA
>>   3.50      93.09mA       0.24A      68.08mA
>>   3.60       0.13A       0.28A      72.59mA
>>   3.70       0.18A       0.33A      81.77mA
>>   3.80       0.22A       0.38A       0.10A
>>   4.00       0.32A       0.48A       0.19A
>>   4.20       0.42A       0.58A       0.28A
>>   4.40       0.52A       0.68A       0.38A
>>   4.60       0.62A       0.78A       0.48A
>>   4.80       0.72A       0.88A       0.58A
>>   5.00       0.82A       0.98A       0.68A
>>  -0.80      -0.84A      -0.79A      -2.40A
>>  -0.70      -0.74A      -0.69A      -2.20A
>>  -0.60      -0.64A      -0.59A      -2.00A
>>   5.00       0.82A       0.98A       0.68A
>>|
>>[Pullup]
>>| voltage     I(typ)              I(min)              I(max)
>>|
>>  -2.50       0.80mA       1.00mA       0.70mA
>>  -2.30       1.00mA       1.20mA       0.90mA
>>  -2.10       1.10mA       1.40mA       1.10mA
>>  -1.90       1.40mA       1.60mA       1.30mA
>>  -1.70       1.80mA       1.90mA       1.60mA
>>  -1.50       2.30mA       2.50mA       2.10mA
>>  -1.30       3.50mA       3.40mA       3.30mA
>>  -1.10       6.60mA       5.50mA       6.90mA
>>  -0.90      22.26mA      12.21mA      27.46mA
>>  -0.70      35.79mA      33.38mA      34.42mA
>>  -0.70      35.79mA      33.38mA      34.42mA
>>  -0.60      32.28mA      33.53mA      31.24mA
>>  -0.50      27.80mA      28.73mA      27.02mA
>>  -0.40      22.46mA      23.06mA      21.85mA
>>  -0.30      16.87mA      17.21mA      16.44mA
>>  -0.20      11.24mA      11.40mA      10.99mA
>>  -0.10       5.61mA       5.65mA       5.50mA
>>   0.00     -57.30pA      -0.97nA      -3.55nA
>>   0.10      -5.49mA      -5.46mA      -5.42mA
>>   0.20     -10.73mA     -10.62mA     -10.62mA
>>   0.30     -15.73mA     -15.48mA     -15.60mA
>>   0.40     -20.46mA     -20.05mA     -20.37mA
>>   0.50     -24.94mA     -24.31mA     -24.91mA
>>   0.60     -29.15mA     -28.27mA     -29.23mA
>>   0.70     -33.10mA     -31.92mA     -33.34mA
>>   0.80     -36.78mA     -35.27mA     -37.21mA
>>   0.90     -40.19mA     -38.31mA     -40.87mA
>>   1.00     -43.33mA     -41.05mA     -44.29mA
>>   1.10     -46.20mA     -43.49mA     -47.50mA
>>   1.20     -48.79mA     -45.61mA     -50.48mA
>>   1.30     -51.12mA     -47.39mA     -53.23mA
>>   1.40     -53.15mA     -49.00mA     -55.77mA
>>   1.50     -54.81mA     -50.40mA     -58.08mA
>>   1.60     -56.39mA     -51.60mA     -60.10mA
>>   1.70     -57.79mA     -52.64mA     -61.85mA
>>   1.80     -59.02mA     -53.55mA     -63.50mA
>>   1.90     -60.10mA     -54.37mA     -65.04mA
>>   2.00     -61.06mA     -55.11mA     -66.46mA
>>   2.10     -61.92mA     -55.79mA     -67.76mA
>>   2.20     -62.70mA     -56.43mA     -68.96mA
>>   2.30     -63.41mA     -57.05mA     -70.07mA
>>   2.40     -64.07mA     -57.64mA     -71.12mA
>>   2.50     -64.69mA     -58.22mA     -72.11mA
>>   2.60     -65.28mA     -58.79mA     -73.05mA
>>   2.70     -65.85mA     -59.35mA     -73.95mA
>>   2.80     -66.39mA     -59.91mA     -74.81mA
>>   2.90     -66.92mA     -60.62mA     -75.64mA
>>   3.00     -67.43mA     -62.85mA     -76.45mA
>>   3.10     -67.96mA     -72.58mA     -77.23mA
>>   3.20     -68.68mA     -98.39mA     -77.99mA
>>   3.30     -70.52mA      -0.14A     -78.74mA
>>   3.40     -75.93mA      -0.18A     -79.69mA
>>   3.50     -93.39mA      -0.23A     -81.70mA
>>   3.60      -0.13A      -0.27A     -86.29mA
>>   3.70      -0.17A      -0.32A     -94.86mA
>>   3.80      -0.21A      -0.37A      -0.11A
>>   4.00      -0.31A      -0.47A      -0.18A
>>   4.20      -0.41A      -0.57A      -0.27A
>>   4.40      -0.51A      -0.66A      -0.37A
>>   4.60      -0.61A      -0.76A      -0.47A
>>   4.80      -0.71A      -0.87A      -0.57A
>>   5.00      -0.81A      -0.97A      -0.67A
>>-133287736222332993536.00       0.00       1.00e       0.00
>>-133287736222332993536.00       0.00       1.00e       0.00
>>-133287736222332993536.00       0.00       1.00e       0.00
>>   5.00      -0.81A      -0.97A      -0.67A
>>|
>>[GND_clamp]
>>| voltage     I(typ)              I(min)              I(max)
>>|
>>  -2.50      -0.80A      -0.84A      -0.79A
>>  -2.40      -0.75A      -0.79A      -0.74A
>>  -2.30      -0.70A      -0.74A      -0.69A
>>  -2.20      -0.65A      -0.69A      -0.64A
>>  -2.10      -0.60A      -0.64A      -0.59A
>>  -2.00      -0.55A      -0.59A      -0.54A
>>  -1.90      -0.50A      -0.54A      -0.49A
>>  -1.80      -0.45A      -0.49A      -0.44A
>>  -1.70      -0.40A      -0.44A      -0.39A
>>  -1.60      -0.35A      -0.39A      -0.34A
>>  -1.50      -0.31A      -0.34A      -0.29A
>>  -1.40      -0.26A      -0.29A      -0.24A
>>  -1.30      -0.21A      -0.24A      -0.20A
>>  -1.20      -0.16A      -0.20A      -0.15A
>>  -1.10      -0.11A      -0.15A      -0.10A
>>  -1.00     -69.91mA      -0.10A     -60.98mA
>>  -0.90     -31.59mA     -62.15mA     -27.93mA
>>  -0.80      -8.78mA     -25.97mA     -13.13mA
>>  -0.70      -2.35mA      -4.90mA      -5.62mA
>>  -0.60      -0.47mA      -0.51mA      -1.25mA
>>  -0.50      -0.13mA      -0.11mA      -0.21mA
>>  -0.40     -84.02uA     -58.67uA      -0.11mA
>>  -0.30     -61.44uA     -41.28uA     -76.09uA
>>  -0.20     -40.74uA     -27.02uA     -50.59uA
>>  -0.10     -20.27uA     -13.32uA     -25.25uA
>>   0.00      -1.78nA     -10.18nA      -2.31nA
>>   0.10      19.70uA      12.72uA      24.74uA
>>   0.20      38.49uA      24.73uA      48.59uA
>>   0.30      56.36uA      36.00uA      71.54uA
>>   0.40      73.27uA      46.52uA      93.45uA
>>   0.50      89.16uA      56.27uA       0.11mA
>>   0.60       0.10mA      65.10uA       0.13mA
>>   0.70       0.12mA      72.25uA       0.15mA
>>   0.80       0.12mA      75.87uA       0.16mA
>>   0.90       0.12mA      72.58uA       0.16mA
>>   1.00       0.11mA      40.75uA       0.15mA
>>   1.10      13.01uA     -68.78uA      90.42uA
>>   1.20      -0.12mA     -76.86uA     -70.09uA
>>   1.30      -0.13mA     -75.97uA      -0.18mA
>>   1.40      -0.13mA     -72.52uA      -0.19mA
>>   1.50      -0.12mA     -67.47uA      -0.19mA
>>   1.60      -0.12mA     -61.19uA      -0.18mA
>>   1.70      -0.11mA     -53.85uA      -0.17mA
>>   1.80     -98.50uA     -45.64uA      -0.16mA
>>   1.90     -87.18uA     -36.69uA      -0.15mA
>>   2.00     -74.77uA     -27.04uA      -0.14mA
>>   2.10     -61.40uA     -16.73uA      -0.12mA
>>   2.20     -47.21uA      -5.74uA      -0.11mA
>>   2.30     -32.23uA       5.89uA     -89.43uA
>>   2.40     -16.49uA      18.13uA     -71.03uA
>>   2.50       0.53nA      32.59uA     -51.76uA
>>|
>>[POWER_clamp]
>>| voltage     I(typ)              I(min)              I(max)
>>|
>>  -2.50       0.82A       0.85A       0.80A
>>  -2.40       0.76A       0.80A       0.75A
>>  -2.30       0.71A       0.75A       0.70A
>>  -2.20       0.66A       0.70A       0.65A
>>  -2.10       0.61A       0.65A       0.60A
>>  -2.00       0.56A       0.60A       0.55A
>>  -1.90       0.51A       0.55A       0.50A
>>  -1.80       0.46A       0.50A       0.45A
>>  -1.70       0.41A       0.45A       0.40A
>>  -1.60       0.36A       0.40A       0.35A
>>  -1.50       0.32A       0.35A       0.30A
>>  -1.40       0.27A       0.31A       0.25A
>>  -1.30       0.22A       0.26A       0.21A
>>  -1.20       0.17A       0.21A       0.16A
>>  -1.10       0.12A       0.16A       0.11A
>>  -1.00      78.81mA       0.12A      66.99mA
>>  -0.90      38.91mA      73.17mA      29.79mA
>>  -0.80      12.60mA      35.08mA      10.90mA
>>  -0.70       4.99mA       9.61mA       5.31mA
>>  -0.60       1.96mA       1.93mA       1.97mA
>>  -0.50       0.47mA       0.45mA       0.42mA
>>  -0.40       0.11mA       0.11mA       0.11mA
>>  -0.30      54.48uA      43.69uA      67.28uA
>>  -0.20      34.52uA      24.78uA      43.98uA
>>  -0.10      17.05uA      11.91uA      21.89uA
>>   0.00       0.53nA       1.46nA      33.44nA
>>|
>>[Ramp]
>>dV/dt_r          1.05/0.12n          0.94/0.17n          1.15/0.11n          
>>dV/dt_f          1.09/0.15n          0.97/0.20n          1.18/0.11n          
>>[Rising Waveform]
>>R_fixture = 100.00
>>V_fixture = 0.000
>>| time           V(typ)              V(min)              V(max)
>>|
>>   0.00S      -1.17uV       0.75uV      -3.08uV
>>  60.00pS      38.17uV     -33.73uV       0.20mV
>>   0.12nS       0.53mV       0.31mV      -1.22mV
>>   0.18nS      -1.42mV       0.46mV      -7.82mV
>>   0.24nS      -7.08mV      -0.48mV      66.01mV
>>   0.30nS      -0.86mV      -2.75mV       0.57V
>>   0.36nS       0.11V      -6.91mV       1.43V
>>   0.42nS       0.55V     -13.07mV       2.02V
>>   0.48nS       1.26V      -4.46mV       2.22V
>>   0.54nS       1.76V      58.74mV       2.27V
>>   0.60nS       1.99V       0.30V       2.29V
>>   0.66nS       2.05V       0.70V       2.29V
>>   0.72nS       2.08V       1.18V       2.29V
>>   0.78nS       2.08V       1.53V       2.29V
>>   0.84nS       2.09V       1.73V       2.29V
>>   0.90nS       2.09V       1.81V       2.29V
>>   0.96nS       2.09V       1.84V       2.29V
>>   1.02nS       2.09V       1.86V       2.29V
>>   1.08nS       2.09V       1.87V       2.29V
>>   1.14nS       2.09V       1.87V       2.29V
>>   1.20nS       2.09V       1.88V       2.29V
>>   1.26nS       2.09V       1.88V       2.29V
>>   1.32nS       2.09V       1.88V       2.29V
>>   1.38nS       2.09V       1.88V       2.29V
>>   1.44nS       2.09V       1.88V       2.29V
>>   1.50nS       2.09V       1.88V       2.29V
>>   1.56nS       2.09V       1.88V       2.29V
>>   1.62nS       2.09V       1.88V       2.29V
>>   1.68nS       2.09V       1.88V       2.29V
>>   1.74nS       2.09V       1.88V       2.29V
>>   1.80nS       2.09V       1.88V       2.29V
>>   1.86nS       2.09V       1.88V       2.29V
>>   1.92nS       2.09V       1.88V       2.29V
>>   1.98nS       2.09V       1.88V       2.29V
>>   2.04nS       2.09V       1.88V       2.29V
>>   2.10nS       2.09V       1.88V       2.29V
>>   2.16nS       2.09V       1.88V       2.29V
>>   2.22nS       2.09V       1.88V       2.29V
>>   2.28nS       2.09V       1.88V       2.29V
>>   2.34nS       2.09V       1.88V       2.29V
>>   2.40nS       2.09V       1.88V       2.29V
>>   2.46nS       2.09V       1.88V       2.29V
>>   2.52nS       2.09V       1.88V       2.29V
>>   2.58nS       2.09V       1.88V       2.29V
>>   2.64nS       2.09V       1.88V       2.29V
>>   2.70nS       2.09V       1.88V       2.29V
>>   2.76nS       2.09V       1.88V       2.29V
>>   2.82nS       2.09V       1.88V       2.29V
>>   2.88nS       2.09V       1.88V       2.29V
>>   2.94nS       2.09V       1.88V       2.29V
>>   3.00nS       2.09V       1.88V       2.29V
>>|
>>[Falling Waveform]
>>R_fixture = 100.00
>>V_fixture = 2.50
>>| time           V(typ)              V(min)              V(max)
>>|
>>   0.00S       2.50V       2.29V       2.71V
>>  60.00pS       2.50V       2.29V       2.71V
>>   0.12nS       2.50V       2.29V       2.71V
>>   0.18nS       2.50V       2.29V       2.71V
>>   0.24nS       2.51V       2.29V       2.52V
>>   0.30nS       2.39V       2.29V       1.75V
>>   0.36nS       1.98V       2.30V       0.85V
>>   0.42nS       1.35V       2.28V       0.49V
>>   0.48nS       0.79V       2.13V       0.40V
>>   0.54nS       0.46V       1.84V       0.38V
>>   0.60nS       0.38V       1.46V       0.37V
>>   0.66nS       0.37V       1.03V       0.37V
>>   0.72nS       0.36V       0.69V       0.37V
>>   0.78nS       0.36V       0.52V       0.37V
>>   0.84nS       0.35V       0.44V       0.37V
>>   0.90nS       0.35V       0.41V       0.37V
>>   0.96nS       0.35V       0.39V       0.37V
>>   1.02nS       0.35V       0.39V       0.37V
>>   1.08nS       0.35V       0.38V       0.37V
>>   1.14nS       0.35V       0.38V       0.37V
>>   1.20nS       0.35V       0.38V       0.37V
>>   1.26nS       0.35V       0.37V       0.37V
>>   1.32nS       0.35V       0.37V       0.37V
>>   1.38nS       0.35V       0.37V       0.37V
>>   1.44nS       0.35V       0.37V       0.37V
>>   1.50nS       0.35V       0.37V       0.37V
>>   1.56nS       0.35V       0.37V       0.37V
>>   1.62nS       0.35V       0.37V       0.37V
>>   1.68nS       0.35V       0.37V       0.37V
>>   1.74nS       0.35V       0.37V       0.37V
>>   1.80nS       0.35V       0.37V       0.37V
>>   1.86nS       0.35V       0.37V       0.37V
>>   1.92nS       0.35V       0.37V       0.37V
>>   1.98nS       0.35V       0.37V       0.37V
>>   2.04nS       0.35V       0.37V       0.37V
>>   2.10nS       0.35V       0.37V       0.37V
>>   2.16nS       0.35V       0.37V       0.37V
>>   2.22nS       0.35V       0.37V       0.37V
>>   2.28nS       0.35V       0.37V       0.37V
>>   2.34nS       0.35V       0.37V       0.37V
>>   2.40nS       0.35V       0.37V       0.37V
>>   2.46nS       0.35V       0.37V       0.37V
>>   2.52nS       0.35V       0.37V       0.37V
>>   2.58nS       0.35V       0.37V       0.37V
>>   2.64nS       0.35V       0.37V       0.37V
>>   2.70nS       0.35V       0.37V       0.37V
>>   2.76nS       0.35V       0.37V       0.37V
>>   2.82nS       0.35V       0.37V       0.37V
>>   2.88nS       0.35V       0.37V       0.37V
>>   2.94nS       0.35V       0.37V       0.37V
>>   3.00nS       0.35V       0.37V       0.37V
>>|
>>| End [Model] x
>>|
>>| End [Component] x
>>|
>>[End]
>
>
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---

From: Matthew Flora <[email-masked]>
Date: Wed, 18 Nov 1998 15:58:34 -0100

Bharat,

>This is a cell about which I had mailed warnings etc. yeterday.

The problem is that you've got some trash in your data points.  Assuming
that your mail tool didn't corrupt the file, take a look at the current in you pulldown table around -0.70 volts and the bad voltages around 5.00
volts.  In your pullup table, the voltage increases to 5 volts, then to
-10e20 volts and then back to 5 volts.  Check your data!!

Good luck!
Matthew Flora
Senior Engineer
HyperLynx
(425) 869-2320 PH
(425) 881-1008 FAX
[email-masked]

PS I included a somewhat cleaned up version:

[Date]           00/00/00 
[Manufacturer]    y
[Pin]  signal_name          model_name           R_pin     L_pin     C_pin
[Temperature Range]       25.00               100.00              0.000
[Voltage Range]           2.50V               2.25V               2.75V