74LS257 数据手册 ( 数据表 ) - Renesas Electronics
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Renesas Electronics
This multiplexer features three-state outputs that can interface directly with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the low impedance of the single enabled output will drive the bus line to a high or low logic level.
To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output enable circuitry is designed such that the output disable times are shorter than the output enable times.
Quadruple 2-line-to-1-line Data Selectors / Multiplexers (inverted outputs)
Renesas Electronics
Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs)
Hitachi -> Renesas Electronics
Quadruple 2-line-to-1-line Data Selectors / Multiplexers (noninverted outputs)
Renesas Electronics
Quad. 2-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Renesas Electronics
Quad. 2-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Hitachi -> Renesas Electronics
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
Hitachi -> Renesas Electronics
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
Renesas Electronics
Quad. 2-to-1-line Data Selectors/Multiplexers (with noninverted 3-state outputs)
Hitachi -> Renesas Electronics
Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Hitachi -> Renesas Electronics
Dual 4-to-1-line Data Selectors/Multiplexers (with 3-state outputs)
Hitachi -> Renesas Electronics