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SN54/74LS257B QUAD 2-INPUT MULTIPLEXER SN54/74LS258B WITH 3-STATE OUTPUTS The LSTTL / MSI SN54 / 74LS257B and the SN54 / 74LS258B are Quad 2-Input Multiplexers with 3-state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present QUAD 2-INPUT MULTIPLEXER the selected data in true (non-inverted) form. The outputs may be switched to WITH 3-STATE OUTPUTS a high impedance state with a HIGH on the common Output Enable (EO) In- put, allowing the outputs to interface directly with bus oriented systems. It is LOW POWER SCHOTTKY fabricated with the Schottky barrier diode process for high speed and is com- pletely compatible with all Motorola TTL families.

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