74AC11257 is QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER manufactured by Texas Instruments.
| Part Number | Description |
|---|---|
| 74AC11251 | 1-OF-8 DATA SELECTOR/MULTIPLEXER |
| 74AC11253 | DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS |
| 74AC11258 | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER |
| 74AC11238 | 3-Line to 8-Line Decoders/Demultiplecers |
| 74AC11239 | DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER |
The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
