Product Overview MC74ACT257: Quad 2-Input Multiplexer with 3-State Output For complete documentation, see the data sheet Product Description The MC74AC257/74ACT257 is a quad 2-input multiplexer with 3-state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems. Features • • • • • Multiplexer Expansion by Tying Outputs Together Noninverting 3-State Outputs Outputs Source/Sink 24 mA ACT257 Has TTL Compatible Inputs These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative. Part Electrical Specifications Product MC74ACT257DG Compliance Status Channels VCC Min (V) VCC Max (V) tpd Max (ns) IO Max (mA) Package Type Pb-free Active 4 4.5 5.5 10.5 24 SOIC-16 Active 4 4.5 5.5 10.5 24 SOIC-16 Halide free MC74ACT257DR2G Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016