The MC74AC258/74ACT258 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 the complement (inverted) form. The outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.
• Multiplexer Expansion by Tying Outputs Together
• Inverting 3-State Outputs
• Outputs Source/Sink 24 mA
• ′ACT258 Has TTL Compatible Inputs