Libraries GuideChapter 11: Design Elements (X74_42 to X74_521)
X74_152
8-to-1 Multiplexer with Active-Low Output
XC3000
| XC4000E
| XC4000X
| XC5200
| XC9000
| Spartan
| SpartanXL
| Spartan2
| Virtex
|
|---|
Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| N/A
| N/A
|
X74_152 multiplexer chooses one data bit from eight sources (D7 - D0) under control of the select inputs A, B, and C. The active-Low output (W) reflects the inverse of the selected data input, as shown in the truth table.
Inputs
| Outputs
|
|---|
C
| B
| A
| W
|
|---|
0
| 0
| 0
| !D0
|
0
| 0
| 1
| !D1
|
0
| 1
| 0
| !D2
|
0
| 1
| 1
| !D3
|
1
| 0
| 0
| !D4
|
1
| 0
| 1
| !D5
|
1
| 1
| 0
| !D6
|
1
| 1
| 1
| !D7
|
Figure 11.10 X74_152 Implementation XC3000, XC4000E, XC4000X, XC5200, XC9000, Spartan, SpartanXL