10- to 4-Line Priority Encoder with Active-Low Inputs and Outputs
X74_147 is a 10-line-to-BCD-priority encoder that accepts data from nine active-Low inputs (I9 – I1) and produces a binary-coded decimal (BCD) representation on the four active-Low outputs A, B, C, and D. The data inputs are weighted, so when more than one input is active, only the one with the highest priority is encoded, with I9 having the highest priority. Only nine inputs are provided, because the implied “zero” condition requires no data input. “Zero” is encoded when all data inputs are High.
Parameters
| Parameter | Description | Units | Default |
|---|---|---|---|
| DELAY | Propagation delay. | s | DGTDELAY |
| IN_MODE | Inputs mode. | IN | |
| OUT_MODE | Outputs mode. | OUT | |
| 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 |