TGATE
P-N totem tristate driver. Direct control over pullup and pulldown transistors.
Model
Note: P is the P-channel enable (active-low) and N is the
N-channel enable (active-high).
Operation
The TGATE drives the output Q based on the states of the P and
N pins.
| P | N | Q | Comment |
|---|---|---|---|
| 0 | 0 | 1 | Pullup On, Pulldown Off |
| 1 | 1 | 0 | Pullup Off, Pulldown On |
| 1 | 0 | Z | High Impedance (Both Off) |
| 0 | 1 | X | Conflict (Totem Error) |
| X | — | X | Unknown Control |
Equivalent Type Statement
Type=TGATE i=P,N o=Q