The document introduces a high-speed CMOS quad 2-channel multiplexer with features such as high speed, low power dissipation, high noise immunity, symmetrical output impedance, balanced propagation delays, and wide operating voltage range.
The M74HC257 is a high-speed CMOS quad 2-channel multiplexer fabricated with silicon gate C2MOS technology. It consists of four independent 2-channel multiplexers with common SELECT and ENABLE inputs. The device is non-inverting and pin and function compatible with the 74 series 257.
| Supply Voltage Range | 2V to 6V |
|---|---|
| Propagation Delay (Typical) | 11 ns |
| Operating Temperature Range | -55 to 125 °C |
When the ENABLE input is held "High", the outputs of the IC become in a High-Impedance state.
If the SELECT input is held low, "A" data is selected; when SELECT is high, "B" data is chosen.
Yes, it is pin and function compatible with the 74 series 257.