Philips Semiconductors Product specification 8-input multiplexer (3-State) 74F251A FEATURES • High speed 8-to-1 multiplexing • On chip decoding • Multifunction capability • Inverting and Non-Inverting outputs • Both outputs are 3-State for further multiplexer expansion DESCRIPTION The 74F251A is a logic implementation of a single 8-position switch with the switch position controlled by the state of three Select (S0, S1, S2) inputs.
True (Y) and complementary (Y) outputs are both provided.
The output enable (OE) is active Low.
When OE is High, both outputs are in High impedance state, allowing multiple output connections to a common bus without driving nor loading the bus significantly.
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