SN74HC253N

TEXAS INSTRUMENTS  SN74HC253N  逻辑芯片, 多路复用器, 双路, 4选1, 16DIP

The is a 4-line to 1-line dual Data Selector/Multiplexer with 3-state outputs. It 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 OE\ input. The outputs are disabled when their respective OE\ is high.

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High-current inverting outputs drive up To 15 LSTTL loads

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Typical tpd = 9ns

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Permit multiplexing from n lines to one line

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Perform parallel-to-serial conversion

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±6mA Output drive at 5V

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1µA Maximum low input current

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80µA Maximum low power consumption

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3-state Version of HC153