3-State Buffers
BUFE, BUFE4, BUFE8, and BUFE16 are single or multiple 3-state buffers with inputs I, I3 – I0, I7 – I0, and so forth; outputs O, O3 – O0, O7 – O0, and so forth; and active-High output enable (E). When E is High, data on the inputs of the buffers is transferred to the corresponding outputs. When E is Low, the output is high impedance (Z state or off).
Parameters
| Parameter | Description | Units | Default |
|---|---|---|---|
| DELAY | Generic propagation delay. | s | DGTDELAY |
| TPLH | Propagation delay from Low to High. If not specified the generic DELAY value is used. | s | |
| TPHL | Propagation delay from High to low. If not specified the generic DELAY value is used. | s | |
| TPZH | Propagation delay from HiZ to High. If not specified the generic DELAY value is used. | s | |
| TPZL | Propagation delay from HiZ to Low. If not specified the generic DELAY value is used. | s | |
| TPHZ | Propagation delay from High to HiZ. If not specified the generic DELAY value is used. | s | |
| TPLZ | Propagation delay from Low to HiZ. If not specified the generic DELAY value is used. | s | |
| IN_MODE | Inputs mode. | IN | |
| IOMODEL | The name of an I/O model, which describes the device’s loading and driving characteristics. | DGTDEFIOMODEL | |
| POWER_NODE | Digital power node name. Is the node used by the interface subcircuits which connect analog nodes to digital nodes. | $G_DPWR | |
| GROUND_NODE | Digital ground node name. Is the node used by the interface subcircuits which connect analog nodes to digital nodes. | $G_DGND |