[IBIS Ver]       3.2
[File Name]      sterm.ibs
[File Rev]       0.3
[Date]           June 25, 1998
[Source]         Artifical Data
[Notes]          This data is a sample, only.
                 This file demonstrates Bus Hold functionality to create
                 an ideal active 50 ohm internal pullup and pulldown
                 terminator that is switched between ground and Vcc
[Disclaimer]     This information is for modeling purposes and is not
|                guaranteed.  
[Copyright]      None - public sample
|
|**************************************************************************
|                            Component SWITCHED-TERMINATOR-SAMPLE
|**************************************************************************
|
[Component]      SWITCHED-TERMINATOR-SAMPLE
[Manufacturer]   None 
[Package]
| variable       typ                 min                 max
R_pkg            200m                100m                300m
L_pkg            4.32nH              3.34nH              5.30nH
C_pkg            0.38pF              0.33pF              0.43pF
|
|**************************************************************************
|
[Pin]  signal_name          model_name           R_pin     L_pin     C_pin
|
  1    Sample1              TOP_MODEL_TERM
 12    GND                  GND
 24    VCC                  POWER
|
|**************************************************************************
|                             Model TOP_MODEL_TERM
|**************************************************************************
|
[Model]             TOP_MODEL_TERM
Model_type          Terminator
|                   
C_comp              0pF        0pF       0pF | Includes Submodel contribution
|
[Add Submodel]
| Submodel          Submodel_mode
SWITCH-TERM         All            | Could also use Non-Driving          
|   
|
|                   typ        min       max
[Voltage Range]     5.0        4.5       5.5
|
|**************************************************************************
|                             Submodel SWITCH-TERM
|**************************************************************************
|
| Example of a switched 50 ohm terminator using bus hold functionality:
|
[Submodel]       SWITCH-TERM
Submodel_type    Bus_hold          | Bus_hold is used for this function
|
| Note, Submodels do not have C_comp
|
[Submodel Spec]
|   Subparameter          typ        min        max
|
V_trigger_f               3.0        2.5        3.5  | Falling edge trigger
V_trigger_r               2.0        1.5        2.5  | Rising edge trigger
|
|                         typ        min        max
| [Voltage Range]           5.0        4.5        5.5
| Note, the actual voltage range and reference voltages are inherited from
| the top-level model.
|
[Pulldown]       | 50 ohm termination to ground 
|
-5V      -100mA    -100mA    -100mA
0V         0         0         0
10v       200mA     200mA     200mA
|
[Pullup]         | 50 ohm termination to Vcc
|
-5V       100mA     100mA     100mA
0V         0         0         0
10v      -200mA    -200mA    -200mA
|
|****************************************************************************
|
[Ramp]           | Used to switch the terminations above
|                       typ             min             max
dV/dt_r                 1.5/0.50n       1.35/0.75n      2.65/0.35n
dV/dt_f                 1.5/0.50n       1.35/0.75n      2.65/0.35n
R_load = 50
|
|****************************************************************************
|
[End]