These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G) is at a high-logic level.
Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are characterized for operation from 0°C to 70°C.
Off state (worst case)
| Technology family | S |
| Function | Digital Multiplexer |
| Configuration | 2 |
| Number of channels | 4 |
| Operating temperature range (°C) | -55 to 125 |
| Rating | Military |
| CDIP (J) | 16 | 135.3552 mm² 19.56 x 6.92 |
| CFP (W) | 16 | 69.319 mm² 10.3 x 6.73 |
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