BUY 74S257 https://www.utsource.net/itm/p/1730314.html

The 74S257 is a 16-pin dual 4-input multiplexer logic gate. It is a member of the 74S series of logic ICs manufactured by Texas Instruments. Description: The 74S257 is a dual 4-input multiplexer logic gate. It has two independent 4-input multiplexers, each with two active-low enable inputs (E1 and E2) and four active-low data inputs (A, B, C, and D). The multiplexer has two active-low outputs (Y1 and Y2). When E1 and E2 are both low, the multiplexer selects one of the four data inputs (A, B, C, or D) and outputs it on Y1 and Y2. Features: Low power consumption High speed operation High noise immunity High input impedance Low output impedance TTL compatible Applications: The 74S257 is commonly used in digital circuits for data selection and multiplexing. It can be used to select one of four data inputs and output it on two outputs. It is also used in memory address decoding, address multiplexing, and data routing. (For reference only)