Nexperia B.V. Quad 2-input multiplexer; 3-state 74AHCT257D,112

The 74AHCT257D,112 is a quad 2-input multiplexer with 3-state outputs, designed for high-speed applications. It is a CMOS device that is pin compatible with Low-power Schottky TTL, complying with JEDEC standard No. 7-A. This multiplexer allows the selection of 4 bits of data from two sources, controlled by a common data select input (S). When S is LOW, data from source 0 is selected, and when HIGH, data from source 1 is selected. The outputs provide true (non-inverting) data from the selected inputs, and can be placed in a high-impedance OFF-state when the output enable (OE) is HIGH. The device features balanced propagation delays, Schmitt-trigger input actions, and accepts input voltages higher than V_CC. It is available in multiple package options, including SO16 and TSSOP16, and operates over a temperature range of -40 ¬8C to +125 ¬8C. The 74AHCT257D,112 also includes robust ESD protection, exceeding 2000 V for HBM, 200 V for MM, and 1000 V for CDM. This product is suitable for applications requiring reliable data switching and multiplexing capabilities.