74LCX257M

FAIRCHILD SEMICONDUCTOR  74LCX257M  芯片, 74LCX CMOS逻辑器件

The is a 2-input quad 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 non-inverted 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. The 74LCX257 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. The device is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the select input.

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Power down high impedance inputs and outputs

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Supports live insertion/withdrawal

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Implements patented noise/EMI reduction circuitry

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Latch-up performance exceeds 500mA