Libraries GuideChapter 11: Design Elements (X74_42 to X74_521)
X74_150
16-to-1 Multiplexer with Active-Low Enable and Output
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 input (G) is Low, the X74_150 multiplexer chooses one data bit from 16 sources (E15 - E0) under the control of select inputs A, B, C, and D. The active-Low output (W) reflects the inverse of the selected input, as shown in the truth table. When the enable input (G) is High, the output (W) is High.
Inputs
| Outputs
|
|---|
G
| D
| C
| B
| A
| Selected Input Appears (Inverted) on W
|
|---|
1
| X
| X
| X
| X
| 1
|
0
| 0
| 0
| 0
| 0
| !E0
|
0
| 0
| 0
| 0
| 1
| !E1
|
0
| 0
| 0
| 1
| 0
| !E2
|
0
| 0
| 0
| 1
| 1
| !E3
|
0
| 0
| 1
| 0
| 0
| !E4
|
0
| 0
| 1
| 0
| 1
| !E5
|
0
| 0
| 1
| 1
| 0
| !E6
|
0
| 0
| 1
| 1
| 1
| !E7
|
0
| 1
| 0
| 0
| 0
| !E8
|
0
| 1
| 0
| 0
| 1
| !E9
|
0
| 1
| 0
| 1
| 0
| !E10
|
0
| 1
| 0
| 1
| 1
| !E11
|
0
| 1
| 1
| 0
| 0
| !E12
|
0
| 1
| 1
| 0
| 1
| !E13
|
0
| 1
| 1
| 1
| 0
| !E14
|
0
| 1
| 1
| 1
| 1
| !E15
|
Figure 11.8 X74_150 Implementation XC3000, XC4000E, XC4000X, XC5200, XC9000, Spartan, SpartanXL