SN74HC253

双路4号线到1线数据选择器/多路复用器三态输出 DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

Each of these data selectors/multiplexers contains inverters and drivers to supply full binary decoding data selection to the AND-OR gates. Separate output-control inputs are provided for each of the two 4-line sections.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled in the high-impedance state, the low impedance of the single enabled output drives the bus line to a high or low logic level. Each output has its own output-enable OE\ input. The outputs are disabled when their respective OE\ is high.

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3-State Version of ’HC153

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Wide Operating Voltage Range of 2 V to 6 V

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High-Current Inverting Outputs Drive Up To 15 LSTTL Loads

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Low Power Consumption, 80-µA Max ICC

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Typical tpd = 9 ns

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±6-mA Output Drive at 5 V

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Low Input Current of 1 µA Max

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Permit Multiplexing From n Lines to One Line

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Perform Parallel-to-Serial Conversion