Libraries GuideChapter 11: Design Elements (X74_42 to X74_521)
X74_151
8-to-1 Multiplexer with Active-Low Enable and Complementary Outputs
XC3000
| XC4000E
| XC4000X
| XC5200
| XC9000
| Spartan
| SpartanXL
| Spartan2
| Virtex
|
|---|
Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| N/A
| N/A
|
When the active-Low enable (G) is Low, the X74_151 multiplexer chooses one data bit from eight sources (D7 - D0) under control of the select inputs A, B, and C. The output (Y) reflects the state of the selected input, and the active-Low output (W) reflects the inverse of the selected input as shown in the truth table. When G is High, the Y output is Low, and the W output is High.
Inputs
| Outputs
|
|---|
G
| C
| B
| A
| Y
| W
|
|---|
1
| X
| X
| X
| 0
| 1
|
0
| 0
| 0
| 0
| D0
| !D0
|
0
| 0
| 0
| 1
| D1
| !D1
|
0
| 0
| 1
| 0
| D2
| !D2
|
0
| 0
| 1
| 1
| D3
| !D3
|
0
| 1
| 0
| 0
| D4
| !D4
|
0
| 1
| 0
| 1
| D5
| !D5
|
0
| 1
| 1
| 0
| D6
| !D6
|
0
| 1
| 1
| 1
| D7
| !D7
|
Figure 11.9 X74_151 Implementation XC3000, XC4000E, XC4000X, XC5200, XC9000, Spartan, SpartanXL