- Type: multiplexer
- Number of elements: 4
- Inputs per element: 2
- Outputs per element: 1
- Bits: 4
- DIP: 16-pin
This multiplexer forwards a four-bit input from one of two sources to the output. The source is selected by the S0 select pin. A low voltage selected the input A, a high voltage the input B.
A high voltage on the enable input OE ties the output to low voltage.
| Label | Description | Signal |
|---|---|---|
| S0 | data select input 0 | active high |
| OE | enable input | active low |
| An | source A input of element n | active high |
| Bn | source B input of element n | active high |
| Yn | output of line n | active high |
| OE | S0 | An | Bn | Yn |
|---|---|---|---|---|
| H | X | X | X | L |
| L | L | L | X | L |
| L | L | H | X | H |
| L | H | X | L | L |
| L | H | X | H | H |
- H: HIGH voltage level
- L: LOW voltage level
- X: don't care
