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MC74LCX139 是一款高性能的2/4 解码器/信号分离器,基于 2.3 至 3.6 V 电源运行。高阻抗 TTL 兼容输入可明显降低输入驱动器的电流负载,而 TTL 兼容输出改善了开关噪声性能。5.5 V 的 VI 规格使得 MC74LCX139 输入能够基于 5 V 器件进行安全驱动。MC74LCX139 适用于内存地址解码和其他 TTL 级总线导向应用。MC74LCX139 高速 2/4 解码器/信号分离器接受两个二进制权重输入(A0,A1),启用时将提供四个互斥有效低电平输出。LCX139 提供有效低电平启用输入。所有输出均为高电平,除了 En 为低电平。LCX139 使用一个有效低电平启用输入作为数据输入,其他启用输入作为极性,可用作 8 输出信号分离器。不适用的启用输入必须永久性接地。电流驱动能力为输出处 24mA。
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MC74LCX139DR2G
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MC74LCX139DTG
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MC74LCX139DTR2G
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