SN74HC257N

TEXAS INSTRUMENTS  SN74HC257N  芯片, 四路数据选择/多路复用器

The is a 2-line to 1-line quadruple Data Selector/Multiplexer with 3-state outputs. It is designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the OE G\\ input is at a high logic level. To ensure the high-impedance state during power up or power down, G\ should be tied to VCC through a pull-up resistor, the minimum value of the resistor is determined by the current-sinking capability of the driver.

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High-current inverting outputs drive up to 15 LSTTL loads

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Provides bus interface from multiple sources in high-performance systems

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80µA Maximum low power consumption

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±6mA Output drive at 5V

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1µA Maximum low input current

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Green product and no Sb/Br