Texas Instruments SN74HC257 Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs SN74HC257DG4

The SN74HC257DG4 is a 4-channel multiplexer designed for high-performance bus-organized systems. It operates within a voltage range of 4.5 V to 5.5 V and features high-current 3-state outputs that interface directly with system buses. The device has a typical propagation delay of 17 ns and consumes low power, with a maximum supply current of 80 ¬µA. It supports ¬±6 mA output drive at 5 V and has TTL-compatible inputs with a low input current of 1 ¬µA maximum. The outputs enter a high-impedance state when the output-enable (OE) input is high, preventing loading on the data lines. The device is available in multiple package options, including SOIC and PDIP, and is rated for operation over a temperature range of -40¬8C to 85¬8C. This multiplexer is suitable for applications requiring efficient signal routing and low power consumption.